Asus G75VW, GPU overheating to 105°C and shutting down please help!

[Req90]

Hello,

As the topic says my GPU on the g75VW is overheating to 105°C 😕

If i don't use it and let it sit it goes down to about 70°C but the second i start using it even browsing the internet it goes up to 97-98°C
and if i open a game it goes up to 103°C and after a few minutes jumps to 105°C and shuts off.

Any ideas how to fix this?

I was thinking of opening it and dusting it out with compressed air and reapplying thermal paste on the GPU and CPU.

I've cleaned it with compressed air before but never took it all the way apart, is it safe to blow air inside the copper coils? Also if anyone
has any advice or a tutorial how to replace the thermal paste for this specific laptop it would be very appreciated, I've had it for almost 3 years now and only recently it began to overheat.

[Clintlgm]

Well I'll help you this much, Air pressure is good keep it under 40 psi. I blew out a copper clip out of mine one time when I forgot to turn down the pressure! For Disassembly see this Video will show you how to dissemble. IC Diamond is what all the custom vendors are pasting with. I have used it with my desktop and its easy and works great. my only advise is be very careful taking it apart keep your screws separated and Identified the cable connections are very delicate and are easily damaged. Search utube for more help there are lots of videos on the G75 the link I gave you I think is the best disassembly video she is very through.

[C4RN1]

I see Clint has already given you a good start. I'll add my 2 cents.

You're also going to want to separate the fan from the heatsink because a lot of dust and debris get trapped there. A old toothbrush will help you get between the fins.

A couple tips for using ICD

First secure the end of the syringe to make sure it's air tight (just push it on, make sure it's tight), you don't want water leaking into the syringe. Get a small glass of hot tap water and let the tube soak in the hot water for about 3 minutes. You want to submerge about half of the syringe tip first. This will soften the ICD making it easier to get out of the tube. When you remove the syringe from the water be sure to dry it off before applying the thermal compound.

Since ICD is very thick you do not want to spread it, use the compression method to spread it or you'll end up with air bubbles.

Here's a link to proper application.

http://www.innovationcooling.com/application.html

Other tips:

Be careful not to bend the heatisnks, most of the ROG G series laptops have heatsinks with a slight bend that go away from the motherboard. If you put the motherboard on a flat table and push, you will bend these heatsinks. It's best to elevate the motherboard with box or stack of magazines so you don't bend the heatsinks when removing them from the motherboard.

Do not pull on the heatsink if it is stuck. If you removed all the screws and it still won't budge give it a slight twist, it will help break the dry thermal compound loose. Don't twist it too much or you will damage the thermal pads on the gpu.

Whatever you do, do not use force. The laptop and all of it's parts are designed to come apart. If you're having a hard time with a particular part, look around that area for a screw. Laptop manufacturers love to hide screws everywhere. Be very careful with the zif connectors, and close them after removing the cable. If you don't close them you could break them when removing the heatsinks.

One last thing, be aware of ESD. Electrostatic Discharge (ESD) can short electrical components in the motherboard. To avoid this simply touch a metal object when you sit down in your chair to work on the laptop. If you walk across carpet sit down and touch your desk leg or desktop computer case. It's a very simple step to remember that can cost you a lot if you're not careful. There are better ways to ground yourself such as an anti-static bracelet, but you shouldn't need one for this single repair.

I hope this isn't too overwhelming for you, if you have any questions we're here to help.

Good luck.

[Req90]

Hey guys!

Thanks for the amazing replies they're super helpful! 🙂

I was wondering if it was ok to use Arctic MX-4 instead of IC Diamond?

I live in Mexico so I'm ordering from Amazon as local sellers here don't supply these things 😕

Also how much paste would i need to reapply it both on CPU and GPU, is 4 grams enough?

I was thinking of getting this: http://www.amazon.com/gp/product/B0045JCFLY/ref=ox_sc_act_title_1?ie=UTF8&psc=1&smid=A3OQKBIOUUJJ02

But if IC Diamond is better should i get this one instead?: http://www.amazon.com/Diamond-Carat-Gram-Thermal-Compound/dp/B0042IBAOG

I'm unsure which ICD to buy as there is a 7 carat and a 24 carat one.

[Clintlgm]

7carat is enough to do several CPUs the only difference is the amount your are buying. A Computer Shop would buy the 24 Carat and they would do a lot of repaste.
All I can say is what I have seen all the custom notebook vendors repaste with IC Diamond as part of the custom service for the notebook. Goggle custom Asus G751 and you'll be able to go check out the 5 or so top custom retailers and see for yourself what they are using. I'm sure something else would work after all Asus only uses Pads made of what? Works good until it doesn't as you are experiencing.