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Laptop closing after heatsink change

by Kaz450-24696714487296213678639859984882 / June 3, 2012 10:18 PM PDT

Hello!

Ok ... I have a problem I dont know what to do with

I have a Aspire 5737z that was overheating

So I got a new fan / heatsink , followed the service guide to change it ( first time i was messing with a laptop .. helluva pain hehe )

Cleaned CPU off of old thermal grease with alchool 70% and lintfree cloth before applying new one and putting the new fan/heatsink

.... I didnt know laptop had thermal grease on video card too but i noticed there was so I did the same as for the CPU. which may be my problem now, i dunno ...

Laptop is starting!

I monitor the temperature , its fine .. around 40-50 degree now .. open skype , firefox .. temp stay good, check dxdiag and everything seem fine there

now i try to open something that need more ressource ( Blender, 3D modeling software ) .. OUCH, the laptop just shutdown ... same for games or anything a lil ressource-taking

I monitored the temp during the opening of those and it dont get up abnormally .. same for RAM

After it close like this i must wait a while before trying to open the laptop again otherwise the laptop wont even make it fully started before shutting down

I go in bios to see if everything is well detected and everything seem fine but one thing:

Video memory: 64mb

its like my video card memory is gone ?

Did i messed up the graphic card by cleaning it with alchool and applying new thermal grease to it like a CPU ?

can it be the cause of my problem ?
What should I try ?

Thanks for your help

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