Hello guys,

Actually, I'm one of the Dell Inspiron 1420 owner and I have own it for approximately 2 years. Hereby, I would like to share my reviews, experience (sweet or bad) and etc about my laptop. Hopefully, I can get some Dell Inspiron 1420 owners to join this thread and share their precious experience with me as well as other owners. For instance, installing new Windows or Mac OS (Microsoft Windows 7 or Mac OS X Snow Leopard), new accessories along with the laptop, problems (hardwares or softwares) and etc ...

Below are the basic specifications of my laptop:

1. Intel Core 2 Duo CPU T8300 @ 2,4 GHz
2. Memory (RAM) 4.00 GB
3. Windows edition: Windows Vista Home Premium-Service Pack 2
3. System type: 32-bit Operating System
4. Windows Experience Index: 3.7
5. Graphics Card Information:
(i) Components: GeForce 8400M GS
(ii) Dedicated Video Memory: 128 MB
(iii) DirectX version: 10.0






"List of Glory" - Owners of Dell Inspiron 1420:
1. Jeffrey1987
2. shirley_andy
3. ShenWoo
4. peachy88
5. chrishii87
6. miloy2k
7. jenzz
8. lugiamcg
9. UltimatePerfect
10. bo093
11. mad_man
12. pronamide
13. Nemesis181188
14. wan7045
15. lazo

* PS: Please PM me if you are one of the Dell Inspiron 1420 User & I will add you guys into this "List of Glory" ...

This post has been edited by Jeffrey1987: May 23 2010, 10:19 PM

I bought my Dell Inspiron 1420 laptop at the price of RM 3700 last two years. Along with the package, I also got a free Targus backpack, that is, Targus Pulse II Backpack (black). Below is the link of Targus:

(maybe you can have a look on how my backpack looks like)


http://www.targus.com/my/cases_notebook_ba...=2&PageNumber=5



This post has been edited by Jeffrey1987: Jan 28 2010, 05:39 PM

Dear Dell Inspiron 1420 owners:

Below are some of my Dell Inspiron 1420 images, have a look ...





















This post has been edited by Jeffrey1987: Feb 5 2010, 02:31 AM

Oo... the battery part got LED one arh??? Nvr notice it... My sis using 1420. She got the remote but dunno why not functioning. Lolz

Yea. if I'm not mistaken,currently only Dell laptops have LED battery indicators compared to other brands like Acer, Lenovo and etc. In my opinion, I think it was a good idea to add this LED battery indicator as occasionally a laptop user may want to check the availability of his/her battery on the spot without plugging in and switching on the laptop. Thus, I want to give this credit to Dell!

As for the multimedia remote control, it was so unfortunate that your sister's one was malfunction. Maybe you can ask her to replace a new battery for her remote control. That might be a solution. Anyway, I usually used it for my presentation (Microsoft Power Point) and also for my MOVIE session in my laptop. I will use it to play/pause/stop during the movie session as I'm lazy to move around so much when I'm watching a movie @ drama.

This post has been edited by Jeffrey1987: Jan 30 2010, 09:33 PM

~~ just found that the led will only light up if press that button. My studio 15 one also got but is 5 white leds... can use as torch light!!

But I'm doubt that it can be used as torch light ... hehehe ...

Another DELL 1420 user here...
You bought yours at RM3700??? why so expensive?? what you've upgraded??

I got my Black coloured one at around 2.6k(almost 18months ago), my upgrade during purchase was Nvidia 8400 GS, Windows Vista HP(although now I already reformatted it with Win7).

Had problem with the display once and they sent technician to change the whole motherboard for me..

Till now no problem and loving it with my Win7.... If only it could have fitted better GC, my current Nvidia 8400 can't play games in full details.

Better be careful as 8400 GS is one of the problematic cards from NVidia, seems that you already spoiled the display once and maybe in near future the problem might occur...you can google for 8400/8600 GS problem, its one of defective product from NVidia.

Welcome to our new thread ... hehehe ... actually I almost forgot what I have upgraded ... Below are some of the basic upgrade options that I have customized last time:

1. Processor T8300 (2.4 GHz)
2. 4 GB RAM (667MHz)
3. Screen Resolutions 1440x900
4. Targus backpack

That's all if I'm not mistaken ... How about yours? What have you upgraded?

As for problems, luckily I have encountered no major problems during the years ... Oh yea, how you got Windows 7 drivers for Dell Inspiron 1420? Mind to tell me?

For gaming part, I'm not really in it. Thus, I have no idea on how bad it is ... hehehehe ... but I have heard before that 8400M GS is problematic ... be careful!

This post has been edited by Jeffrey1987: Feb 2 2010, 07:25 AM

Well, comparing both Jeff & Shirley price, its reasonable as Jeff bought his 2 years ago which by means that the market price at that time are still high and now its gotten much more cheaper (which Shirley bought hers at RM2600 that this 18 months ago)...

@Jeff
Got any problem with your display before??

Luckily is a big NO for me ... maybe because I seldom use it for gaming ... I usually used my laptop for surfing internet only ... Besides that, I'm also using cooler pad ... but now not anymore ... because at Germany, the room temperature is quite low (around 20 degree celsius) ...

Well, then its for you...often heard problem from laptop equipped with 8400M/8600M GS...well, maybe temp playing a big part here

Yea, I do agree with you ... because the Dell Inspiron 1420 easily heat up ... so we have to be careful with the temperature ... hehehe

Wow, then hopefully it(8400 GraphicCard) won't spoil again cuz it's already no more on waranty...
Anyway almost all driver is workable on Win7... Only the 8400GS graphic card I have to re download the driver cuz switching from 32 bit to 64 bit

Guys. I need some help here about my wireless.

Recently my laptop had been disconnecting randomly when its connected to a network but the network is still available(HP laptop as witness)

Did any of you suffered the same?

Mine was white, bought a year ago, change the display screen twice in less than 6 months...the technician sed, this model normally is display screen problem lur...^^''
Anyway, Dell service was fast...keke...

I personally don't have this kind of problem occured ... but sometimes my laptop do hard to connect to the existing wireless network ... maybe due to my poor wireless card and the type of wireless router? I don't have any idea about it ... sorry.

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Added on February 3, 2010, 10:53 pm O.M.G ... so unfortunate ... Luckily, your laptop is still under warranty ...

Anyway, your laptop cover is same colour as mine. I'm loving it so much till now though it already 2 years old.

Oh yea, do you have any minor problems occured besides that?

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Added on February 3, 2010, 11:08 pmOh yea, do you mind to share with us what is your laptop specifications? Thanks in advance!

This post has been edited by Jeffrey1987: Feb 3 2010, 11:08 PM

hi, i'm one of the user too. bought it a year plus already. got problems with gpu. and lucky it's still under warranty and got my laptop's motherboard changed. i have a question to ask, i'm using windows 7 32bits. does anyone have a problem with the bluetooth? mine not working with the vista driver...

so far nope try checking dell website for latest driver maybe got already

So, you don't have problem with bluetooth driver? You are using Windows 7 too? Because I plan to switch mine to Windows 7 very soon and bluetooth is very important for me as my Logitech V470 mouse is a bluetooth mouse and without bluetooth I will be "finished" ...

so far nope, using win7 32bit for wiffy lappy

Hooray ... really happy to hear that ... oh yea, do you mind to share with us your specifications of your laptop? For instance, colour, processor, RAM and etc ...

Besides that, how long have you owned Dell Inspiron 1420 and is it still under warranty?

yea, i tried installing the one on the dell's websites. It doesn't work for me though. Hm...

O.M.G ... tell me if you have the solution ...

nope. don't have the solution yet. Have tried numerous of times and it still doesn't work. I wonder if it's the way i install. Hm.. anyone else got this kind of problem?

New user reporting in~hehe.
Been using 1420 for 2 years i think,colour is white too.haha

I got 1 question as i am seriously very clueless when it comes to computer stuffs,when 1st bought the labtop, do we have to buy the graphic card on our own or isit already installed inside it? (This labtop is not mine orginally).

I'm having problem playing games because it is so damn SLOW.

" ACCESS DENIED ... PLEASE TYPE YOUR USERNAME & PASSWORD AGAIN ... "

Just kidding ... you are certainly welcome to our new Dell Inspiron 1420 user thread ... We are glad and excited to have you here ...

Firstly, I will try to answer your questions with my humble computering knowledge ... Generally, a laptop is equipped with a integrated graphic card or dedicated graphic card. It depends on the buyer himself/herself according to their daily usage and demand. Thus, they have to decide whether they will use their laptops mostly on high-end applications/ gaming or just normal usage like doing some office works and internet surfing. For instance, I have bought the Dell Inspiron 1420 laptop which was equipped with dedicated graphic card, that is, NVidea GeForce 8400M GS (128 MB) for some light gaming.

As for the second question, a laptop will become slow due to several factors:

1. Processor
2. RAM
3. Capacity of your hard drive (HDD)

Lastly, mind to share with us your laptop's specifications?

if u're still being loyal to the stock OS( Vista Home Basic), slow, is juz normal. I couldn't bear those lags anymore so i changed it to 7 Ultimate 64-bit but there's a catch, u'll be having some prob if ur games are using directx 9.0c =D

PS: add me into this thread =D

Welcome to our new "clan" ... Actually, I'm now still using Windows Vista Home Premium 32-bit and plan to switch to Windows 7 Professional 32-bit very soon but I heard some problems regarding on bluetooth driver. Do you encounter the same problem? For your information, bluetooth is very important for me as my mouse is a bluetooth mouse & for certain I need bluetooth to connect it to my laptop ...

frankly, yes, initially. Now, it's all solved thx to 'Prasys'. He found a bluetooth driver that solved it lol. U can try seeking for his help and hope that he would be able to find it again =D

O.I.C ... then I will try to PM him in order to get the solution ... hehehe ... Thanks so much for your precious information ... Anyway, mind to share with us your basic specifications of your laptop? For instance, colour, CPU, GPU and etc ...

This post has been edited by Jeffrey1987: Feb 13 2010, 08:49 AM

lol, no prob.
oh no, my specs...haha. It's a way too bad compared to urs

CPU: C2D 2.0Ghz
GPU: NG 8400M GS( overclock when needed)
Ram: 3G only
OS: Mac OSX n 7 Ultimate
Color: Red
Wifi card: some dono wad wireless-n card

Just sharing around ... don't be so shame of your laptop ...
Briefly, how many years have you owned your laptop. Like mine, I have own this machine for approximately 2 years. As for the wireless card, I also have forgotten what is mine ... Oh yea, sometimes I do found that my laptop was hard to connect to the wireless signal compared to my friend's laptop ... haiyz ... don't know whether is wireless card or wireless router problem ...

This post has been edited by Jeffrey1987: Feb 13 2010, 09:44 AM

lol, mine is 1yr n 4mths old.
well, when im using vista, same thing happens to me. Not only that it's hard to connect, most of the time, it seems to auto-dc
but once i changed to 7, prob is solved. Not sure why...

Then, I will switch to Windows 7 A.S.A.P after I have finished my exam ... can't wait to try out the Windows 7 ...

hi..i also use dell inspiron 1420.red colour..use around 2 years++ ... nice laptop...!!

Welcome to our new Dell Inspiron 1420 User thread & hope you will enjoy yourself here ... Anyway, mind to share with us your laptop's specifications? For example, the GPU, CPU and etc ...

Moreover, you can also share with us your experience as Dell Inspiron 1420 owner such as problems encountered during the usage of this laptop and warranty.

Furthermore, have you switched to Windows 7 or still stick to Windows Vista? Hope you can share with us and exchange stories among the "Lister of Glory" ... Tchuss!

PS: I have added your name into our "List of Glory". Please be informed!

This post has been edited by Jeffrey1987: Feb 15 2010, 11:22 PM

hello...ca i join...i don hav dis lappy....hehe
but i do the maintanence...hihi
its my gurl lappy,i think a year n a half now...
this is the spec:

C2D 2.0 Ghz
Nvidia 8400 GS
Win 7 Ultimate

once she told me it hav bluetooth,
but now gone??why ek??

let me know if you have the solutions already..

Yea, you are welcome to join us here at our new Dell Inspiron 1420 thread. Nevertheless, I can't add you into our "List of Glory" as apparently you are not a Dell Inspiron 1420 user. SORRY. Oh yea, I saw from your last post that you are the one who help to maintain your GF's laptop and you encountered bluetooth problem? Actually, the laptop's bluetooth started to malfunction since when? After you have reformat her laptop or ... ? As I heard from other Dell Inspiron 1420 users, they are also having the same problem except lugiamcg who said he got a solution from "prasys" . So, maybe you can ask "prasys" directly? I will only can assist you after I have finished my exam on 9 March 2010 because I plan to switch to Windows 7 too.

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Added on February 14, 2010, 4:24 pmYea, certainly I will inform you if I have the solution. However, I will be very busy till 9 March 2010 as I have exams coming on. Thus, maybe you can PM "prasys" as I have stated at the previous post. So far I have known, he is the only person who know how to solve the bluetooth issue. All the best!

This post has been edited by Jeffrey1987: Feb 14 2010, 04:25 PM

the bluetooth got prob b4 i 4mat to w7 ultimate,
now my gf say sumtimes its ok n sumtimes not...

O.I.C ... then i'm not really sure about it. Maybe there is a hardware problem. You can try to scan your hardware & see whether the bluetooth card is working properly.

Furthermore, is there any possibilities that your GF accidentally switch off the bluetooth? For instance, please refer to the picture below:

that wifi switch rght

Initially, I think like that too. However, the bluetooth always go off when I switch it off. Thus, I believe that the switch has to be connected to the bluetooth. From the 2nd picture, you can notice that the bluetooth indicator light goes off when I switch it off ... In order to verify my hypothesis is true, maybe you can try on your GF's laptop ...

C2D 1.8GHz
2GB Ram
220GB HDD
8400M GS

After just 1.4 year+ got hit by the GFX card.
Swap the motherboard.

Welcome to our new Dell Inspiron 1420 thread. Thanks for sharing with us your specifications of your laptop. First and foremost, I have heard from you that your Dell Inspiron 1420 laptop occured GPU problem after 1.4 years of usage and eventually lead to the failure of motherboard. At that moment, are you still in warranty period? If not, how much you need to pay for your swapping of motherboard?

Besides that, how much your laptop cost you when you 1st bought it? Like mine, I have bought mine for RM 3700 including a Targus backpack.


PS: I have added your name into our "List of Glory" ...

This post has been edited by Jeffrey1987: Feb 16 2010, 02:57 AM

Around Rm2700+
The thing about the GPU is.
If that fail. You must swap the motherboard.

Just recently. Swap OS. To XP.

O.I.C ... Anyway, why don't you try on the Microsoft's newest OS- Windows 7. I think it will run as smooth as Windows XP too ...

I get W7 when I can.

Oh yea, how many years of warranty do you have for your laptop?

Inspiron 1420 user that lost his laptop T_T

Sorry to hear that. Actually, when you lost your Dell Inspiron 1420 laptop & how did it being stolen? As I saw from your location status- Melbourne, Australia, did you lost your laptop there?

This post has been edited by Jeffrey1987: Feb 17 2010, 01:16 PM

Ladies and Gentlemen,

Today, I would like to share with you guys my laptop accessories which I have used them along with my Dell Inspiron 1420 for 2 years. Hereby, I would like to show you guys my mouse, that is, V470 Cordless Laser Mouse for Bluetooth (White) . For your informations, I bought my mouse right after I received my laptop. The main reason I bought Logitech mouse is because I personally believe the quality built that was promised by Logitech though the price was quite high at that time. The colour is white which I purposely chose it in order to match it with my alpine white laptop. Below are some pictures of my precious mouse:





This post has been edited by Jeffrey1987: Feb 18 2010, 06:23 AM

hello Jeffrey...was invited here by u...lol...actually the post was for my uncle...wanted a quick solution but now since new year is gone so...i forgot the specs...haha...btw need to change the motherboard if the screen got blur??cause it cost around RM400 le....

You are welcome to our thread though ... Actually, Dell Inspiron 1420 laptop has GPU problem ... did your uncle's laptop equipped with NVidea GeForce 8M?

from wat i know...i think so....

Hello guys,

Today, I would like to share with you guys my Dell Inspiron 1420's Benchmark. As you can see from my screenshots, my CPU and GPU temperatures are relatively high. How about you guys?



This post has been edited by Jeffrey1987: Feb 27 2010, 11:33 PM

from wat i know laptops are like tat. where did u use it when u do this? when it is on ur lap?for laptops there is this cooler that u can put under the laptops...

I did the temperature measurement by lying my laptop on my table without using any laptop cooler. The room temperature here is around 20 degree celcius as now is still consider winter at Germany. In my opinion, the CPU and GPU temperatures are quite high compared to other laptops. How about your uncle's one?

All sifu's here,
sorry to butt in but I got a problem with me 1420.

My 1420 failed to boot. it came out stating that there is a problem in booting with the OS from the HDD and asked to boot with repair (recomended), but once i choose the option, it just froze with a blank screen!
I went to the boot setup and tried to boot with the vista CD that came with, but halfway thru loading windows (after a blue flicker on the webcam), everything froze again! I thought it needed some time so I left it running as it is but after 6 hours still the same blank screen.
The HDD indicator on the laptop did not flash at all!

Got my 1420 2 years ago, running on vista premium, 2GB RAM, Celeron Core Duo. there is ample disc space.
I m no techie so would appreciate your valuable feedbacks....
HELP PLEASE!

In simple words, your laptop can't boot up into the Windows? Right? Recently, did you installed some new softwares? Maybe you can try to scan your hardwares in order to check their functionality. If there are no problems occured, then that might be a big probability that you have installed some incompatible softwares into your laptop. Thus, you can try to reset your laptop to previous date and boot it up again. All the best!

This post has been edited by Jeffrey1987: Mar 1 2010, 02:14 PM

Hi Bro Jeff,
thks for your advice

new software, hmmm... it could be the FOC spybot software some friends recomended....
but i noticed that my laptop has been "behaving" wierdafter the installation. slow startup... excessive heat... but didnt take note of it.... my mistake...

just a quick 1.... how do i go about scan the hardwares to ensure functionailty and reseting my laptop to the previous date as i can;t even go beyond anything...

thanks again for your advice...

This post has been edited by mad_man: Mar 1 2010, 02:08 PM

@mad_man
you can try booting your HDD with other laptop..see if the problem lies in the OS or not...if your Window can boot nicely with other laptop then your problem is your laptop itself, and if your Window also cannot boot with other laptop then maybe your HDD got problem or your OS corrupted somehow ...

Can you boot into Safe Mode by pressing F8 during boot?

well i dun know about my uncle's 1 right now. cause i live in malaysia and my uncle is on the other island..if u understand wat i'm saying. well generally people will make the laptop to be higher at the back or leave some space at the btm. cause if i'm not mistaken, the laptop works on heat sinks where generally it is enough for moderate work at ur temperature u are at now. if u are the gaming type den...u should at least get a laptop cooler... thats my opinion generally...

Hi miahahaha,
i can't get my hands on another laptop..
i have tried to use the HDD with an external casing/adapter but the pins are not the same

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Added on March 2, 2010, 8:32 amwill try tonight! hope this works!
on the safe side, any other recomendations if this fails?

This post has been edited by mad_man: Mar 2 2010, 08:32 AM

For the hardware scan, you press the button "F12" before booting the Windows. After that, you select the hardware scan in order to proceed. Then, let it scan your hardwares and wait until it finishes.

PS: I have added your name into our "List of Glory".

This post has been edited by Jeffrey1987: Mar 2 2010, 04:32 PM

Hi Jeff,
thks for update.
Seems hard disc kong! everything else working normally (thank goodness)
headache now have to load everything again!

thks again for all your advises and help!

BTW, what is "list of Glory?"

All the best for your laptop. Anyway, "List of Glory" is a list of Dell Inspiron 1420 owners' name which I have created specially for this thread. You can refer to the 1st post of this thread.

Can you all share your temp from your laptop?

temperature of? cpu, gpu etc?

Hi Guys,

WTA, is there any other way to buy the ORI adapter for 1420 60W/90W beside from online call? can i buy it from DELL authorized reseller around KL or PJ? How much it is the cost of the adapter and the warranty?

thanks a lot...

Here is mine, share with us yours too.

(i) The Temp. without ZM NC2000 Notebook Cooler:



(ii) The Temp. with ZM NC2000 Notebook Cooler:

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Added on March 10, 2010, 3:08 amI'm not really sure about this. Oh yea, you are Dell Inspiron 1420 user too? May I add your name into our "List of Glory"?

This post has been edited by Jeffrey1987: Mar 14 2010, 04:49 PM

another inspiron 1420 owner reporting in..

Glad to have you here with us ...I already add you into our "List of Glory". Please share with us your exp. of being the Dell Inspiron 1420 owner ... love to hear that!

Do anyone have problems with the Eject Buttons? (DVD-ROM)

is this model still build with the nVidia 8400 Graphic Cards?

Thanks

For the time being, I do not have the optical drive eject problem. What happen to yours anyway? You can try to eject the optical drive by right click the optical drive icon at "My Computer" and then select "eject".

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Added on March 22, 2010, 7:33 pmYea, I believe that Dell Inspiron 1420 only comes with NVidea GeForce 8400M GS which is a problematic GPU series in laptop. Why you asked so?

This post has been edited by Jeffrey1987: Mar 22 2010, 07:34 PM

Around 70C your one.
My is 73C. With cooler pad. and without.

If I put my hand near the exhaust. It feel like can cook eggs.

Maybe I need to try one of these
http://www.evercool.com.tw/products/nb_ma1.htm
http://www.evercool.com.tw/products/nb_ft1.htm
http://www.evercool.com.tw/products/nb_fa.htm

In my humble opinion, Zalman notebook cooler served me and most of the other end users very well. Thus, maybe you can consider of buying a Zalman notebook cooler? Anyway, I never saw the review on this type of notebook cooler. So, I'm not really sure whether it is really efficient on dissipating heat from the laptop. Nevertheless, it still depends on your budget. If your budget is around:

(i) RM200 = Zalman NC2000.
(ii) RM100 - RM199 = Zalman NC1000 or NC1500.
(iii) RM 50 - RM 99 = Cooler Master NotePal Color Infinite, Cooler Master NotePal U2 and etc.

Besides of Zalman NC2000, I also recommend you to buy Cooler Master NotePal U2 which you can adjust your location of the fan. I have seen some reviews on this and all are positive feedbacks from the laptop owners.

Below is the unboxing video of my Zalman NC2000:



This post has been edited by Jeffrey1987: Mar 28 2010, 07:35 PM

Well the product I link is not a cooler pad.
Well that item will help draw out the hot air.
This item plus cooler pad could be a wining solution.
But I have to get a better cooling pad.
I Cooler Master NotePal U2 will the best option since can adjust the fan location.
Cause my laptop i put the vent ontop of the fan.

bro Jeffery1987,
the Zalman NC2000 looks promising...may i know which shop sells it?(klang valley, kl, selangor)

Thanks

Yea, I know that they are not cooling pad. Anyway, why your laptop's temperature is so high though you are using a notebook cooler too? What is your current notebook cooler brand? May I have a look on your screen shot of your temperature monitoring sensors such as HWMonitor?

Last but not least, Cooler Master NotePal U2 is really a good choice as it is cheap and relatively good with its adjustable fan.

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Added on March 28, 2010, 7:23 pmAs you can see from the unboxing video in YouTube above, I have ordered it from Amazon.de as in Germany I hardly can find the Zalman products from the electronic shops which is really pathetic and it cost me around 46 EUROS. As for shops in Malaysia, I think you can find it in any Low Yatt Plaza shops but I do come across a Low Yatt Forumer who bought it quite cheap from a dealer in this forum. Click this.

This post has been edited by Jeffrey1987: Mar 28 2010, 07:33 PM

Some china made brand.
Im not even sure why is it this hot.
I clean the vent often. And the pad.

But I think it got to be the coolling pad fan or the pad itself.
The pad don't have holes or vent.

Forget about the 73C. Now is 68C.

I think your notebook cooler is not suitable for Dell Inspiron 1420. Anyway, are you a gamer? If you do, then it is probably one of the contributing factors.

This post has been edited by Jeffrey1987: Mar 28 2010, 08:00 PM

I do play games.
But pretty much light games. Like Counter Strike 1.6 and COD4 with tweaks.
CS1.6, my Frame Per Second is 100. COD4, I get FPS 120 highest.

If I use V-Sync will the Graphic card get cooler?
60 FPS for 60Hz.
There for not making the GC producing extra frames.

I sound a bit abusive there.

Okay Now I understand why is on 73C, I was watching video on youtube. Fullscreen of course.
68C when idling.

Actually, I'm not a gamer. Thus, I'm not really good at these stuffs such as frame per second and etc. Nevertheless, I do know that playing games can heat up the GPU instantly.

My girlfriend is using the Inspiron 1420

But during yesterday,she did the windows update and when everything was done,the screen brightness is very dim.

Usually when we connect using the power plug and not the battery,the brightness is high but then now using power plug the brightness is dimmer than using battery.

Any ideas what happened?