Easy
Dell Precisions will fit your requirements perfectly; but costing a bomb while they're at it though
So you need to choose your customizations carefully: http://www.dell.com/my/business/p/precision-laptops.aspx

15.6"
Precision M4600, i5-2520M +Nvidia Quadro1000M@RM5200, Win 7 Pro, 3 Years NBD, [Screen Upgrade: HD Multi-Touch, FHD, FHD IPS RGB] [CPU Upgrade: up to i7-2960XM] [GPU Upgrade: Quadro 2000M] [RAM up to 32GB], 3 Years ProSupport
Precison M4700, i5-3320M + Nvidia Quadro K1000M@RM6300, 4GB, 750GB(7200rpm), W7P [Screen Upgrade: FHD, FHD IPS RGB] [CPU Upgrade: up to i7-3920XM] [GPU Upgrade: Quadro K2000M] [RAM up to 32GB], 3 Years ProSupport

17.3"
Precision M6600, i7-2640M +Nvidia Quadro3000M + (1600x900)@RM7549, Win 7 Pro, 3 Years ProSupport, [Screen Upgrade: FHD, Multi-Touch FHD] [CPU Upgrade: up to i7-2960XM][GPU Upgrade: Quadro 4000M, Quadro 5010M] [RAM up to 32GB]
Precision M6700, i7-3520M + AMD FirePro M6000 + (1600x900)@RM8100, 4GB, 750GB(7200rpm), W7P, 3 Years ProSupport, [Screen Upgrade: FHD, IPS FHD, 3D FHD][CPU Upgrade: up to i7-3920XM][GPU Upgrade: Quadro K5000M] [RAM up to 32GB]

Since the specs here are base specifications (pretty lousy when stock); I would suggest you to go for the M4600 (Sandy Bridge) or the M4700 (Ivy Bridge) so that there's still money left for upgrades. I would personally recommend the former since the price increase is not exactly worth it for the upgrade from SB to IB...

For the M4600 (or the M4700), upgrade the CPU to i7 at least, 8 or 16GB RAM, upgrade the screen to FHD, upgrade or add in an SSD, that will make good use of your budget, and ultimately give you a monster rig that is good in every aspect
You can deal with "putochip123" or "viper88" for discounts, with your budget I'm sure they can give you a rather big slash from the price tag 

If Win 7, not much troublesome for u to get all the drivers. 

Else u can always get them from asus website.

asus a45vd and u36sg rx072v which one will be better and why?

What do you mean by upgrading the Y480? What do you intend to upgrade?
Y580 is much better in terms of graphic performance if that's what you're asking..

Lenovo U410 is a totally different category than the Y480/580 oh... its more geared towards portability and slimness. Don't expect it to perform as good as the Y480/Y580, its not even close at all

Better in terms of? 

i thought that u410 would be the same as y480 cause the design is good
emm no no my mistake.
what i mean is what can i upgrade on y480 in order to be similar to y580 if i want to lah

can you help me again 

asus a45vd and u36sg rx072v which one will be better and why?

which one shld i buy ?
what is the difference ?

are they led screen or lcd screen?

Nope, you won't be able to upgrade the Y480 to become the Y580 (in terms of specifications)

U410 is an ultrabook - Basically used for simple daily tasks (office, web surfing, watching movies etc.). Its build with slimness and portability in mind, at the expense of performance.

Y480/580 are multimedia machines - Weight is not really a concern here. They are designed to offer good CPU/GPU performance, and not to mention relatively better cooling systems and great speakers as well.

So at the end of the day, you need to decide what you want
Would you rather sacrifice performance for lightness, or vice versa

Preferred Brand: Anything will do but try to avoid Asus if possible
2. Budget: 1.5k (max) since my balance 1.5k i would use to buy Galaxy Note 
3. Usage:
                  light gaming like fifa,dota2,nfs
                  assignment,surfing,photoshop (if possible),programming,
               

4. Preferred laptop/screen size: 14 should be enough for me

thanx sifu 

Err... Its impossible for is to know what you want to buy when you do not state what you are using the laptop for (which is why we have a format that everyone should follow when posting btw  )
If you want mobility and a smaller laptop = U36
If you want a laptop with better graphic performance = A45Vm (Not A45Vd), the A45Vm is more powerful but with the same price tag

Asus
A45Vm-VX113v, i5-3210M + Nvidia GT630M (2GB)@RM2099[2.4kg], 2GB, 500GB(5400rpm), W7HP

Pretty much this one, don't think can get an i5-powered notebook at RM1.5k 
14"
HP Pavilion G4-2026TX/2027TX, i3-2350M + AMD HD7670M@RM1699, 4GB, 640GB(5400rpm), W7HP; colors: black/red

I want to use it to watch mv and normal surfing plus do assignment .
I am thking whetger I shld sacrifice the DVD player or the weight

could I get any free dos notebook? 
how about asus?

Those are pretty normal usages
Both of them would be good enough, its just a matter of whether you want a 13" or a 14" screen.
THere are other alternatives as well if you're interested 

1. Preferred Brand: Any
2. Budget: below 2k
3. Usage: Microsoft excel, words. Watch movie, downloading.. not gaming
4. Preferred laptop: Ultrabook

Sorry TS you can just ignore my PM I sent to you, because I didn't know that the thread for V15 is closed and could you please post a direct link to V16 from V15 thread? Thanks.

1. Preferred Brand: Any will do.
2. Budget: Around RM2.5-3.5k. (the lower the better)
3. Usage: Mostly entertainment purposes (Music and movies), movie making and some gaming (like dota2)
4. Preferred laptop/screen size: 14in or more for the screen please.

Thanks in advance!