i dont think you can easily add in. you probably can find the connector and solder it to the board, after that most probably you will need to hack the bios as well.

not saying it is impossible but it might be easier if you just buy 2.5" ssd and add in caddy for more storage replacing your optical drive.

oooouuuhhhhhh.... that's hard...

check your temperature. I'm afraid it is throttling. If it is temperature issue, RMA under warranty. I'm gonna guess the thermal paste need replacement.

I'm going to bet on the HDD. 5400RPM mechanical HDD does bottlenecked pretty easily on Windows 8.1 somehow. Even my Lenovo Y580 slowed down due to 100% HDD usage. I would recommend to disable indexing service, slower search but faster overall operation.

If your hdd is detected in the BIOS, probably the content is already messed up. Probably need to re-build the hdd. Try one key recovery?

There's one in Prangin...

not 100% sure but pretty confident it is... It is listed in the website though...

I once asked them if they can help me repaste my laptop, they said they can't help. so, i wont recommend them.

sure they might not know how to do it but if they can't help me send it to the service center, what's the point. they are specialised in sales rather than service.

I was talking about the one in Bukit Jambul as pointed. I'm not sure about the one above a shoplot.

I do it after 1 year of ownership. However, I've been having high temp gaming session in US winter about 3 - 4 months after ownership. I'm not sure how better is the newer models, but I would recommend to monitor your temperature around that period.

After repasting, I brought down at least 10'C temperature of CPU and GPU.

normally, they do... but I think some might decline due to possible warranty issue.

they will do repaste, but with their own, not your paste...

Could be just your panel or ribbon cable is problematic.

Yup, just send them in for checking.

If you're worried about warranty maybe you want to ask them to do it for you.

Normally it won't affect your warranty even if you do it yourself

Original HDD content already gone? then your only chance is to go to Lenovo to rebuild OKR.

Not so sure, but you can actually get the upgrade via ISO if you really want it

https://www.microsoft.com/en-us/software-download/windows10

The internal HDD is using SATA.

Wait, there's a mechanical disk with mSATA??????

my Y580 is still up and running with Windows 10 without a hiccup at all... go ahead if you're thinking upgrading...

come to think of it, this laptop has been on 3 iteration of windows... that's something...

94C is still cool though, I used to hit 100C and more with BF3

Sending to Lenovo is always the best options... But last time I DIY I use Arctic Cooling MX4 and temperature improves a lot...

As for the Win10 slide wallpaper, I don't know... Did you check your CPU usage and see if it spikes at those times???

aahhhh... I usually just make the system to always use Nvidia GPU because I have an issues where the GPU always go AWOL when I need it because it went sleeping and never get to wakes up... probably why I didn't have much issues.... but normally I don't let the system auto manage which GPU it should use for me because I always face problems when somebody else auto manage for me....

I would definitely recommend you to assign which application specifically to use the nVidia GPU and default everything to Intel's iGPU since you use that, that way you can have less headache in the long run but definitely big headache setting that up. Totally understandable if you don't want to do that (thus the reason why I just defaulted to always use nvidia gpu)

100C doesn't melt you hardware yet and as I recall correctly, it is right below temperature setpoint for throttling...

as for controlling the fan, you'll need customized BIOS IINM... Or maybe you can try SpeedFan????? But still, if the BIOS doesn't provide the hooks, you can't do anything....

I've had zero issues on my Y580 with Win10. In fact, a lot better compared to Win8.1... Try to get latest wifi driver from Lenovo or from the chip provider (it's either Intel or Broadcom IINM)