Solved Computer switches off seconds after start up

August 22, 2013 at 05:47:02
Specs: Windows 7
I cleaned my cpu fan and reassembled the laptop. Now when I switch on the computer, it commences launching window7 THEN abruptly switches off.
It does the same even if I try to enter BIOS setup, or boot device options. I only get about 20 seconds, then the power goes OFF

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✔ Best Answer
August 22, 2013 at 06:45:13
Did you remove the CPU fan completely to clean it? Sounds a lot like hardware (maybe something wasn't put back together properly) or heating issue. If you removed the CPU heatsink, you are going to need to remove and reapply thermal paste, as likely the issue you are having is due to CPU overheating and shutting down.

For reference... HP 635 Disassembly guide: http://www.hp.com/hpinfo/globalciti...

www.standby-it.com

message edited by jpag3074



#1
August 22, 2013 at 05:50:00
Sounds like it may be over-heating. Can you hear the CPU fan or feel any air blowing out? You will want to check to make sure the CPU fan is actually spinning and re-assembled.
What is the make/model?

www.standby-it.com


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#2
August 22, 2013 at 06:10:20
It's an hp 635 laptop. Yes I can feel the air from the fan.
It gives the the option to start "launch start-up repair".......
........starts "loading files", begins opening the windows screen, then switches off.

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#3
August 22, 2013 at 06:34:17
HELP. Still waiting for suggestions.

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#4
August 22, 2013 at 06:45:13
✔ Best Answer
Did you remove the CPU fan completely to clean it? Sounds a lot like hardware (maybe something wasn't put back together properly) or heating issue. If you removed the CPU heatsink, you are going to need to remove and reapply thermal paste, as likely the issue you are having is due to CPU overheating and shutting down.

For reference... HP 635 Disassembly guide: http://www.hp.com/hpinfo/globalciti...

www.standby-it.com

message edited by jpag3074


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#5
August 23, 2013 at 12:12:41
I agree with jpag. If you removed the heatsink to clean it & then reinstalled it reusing the old thermal material, or used too much thermal paste, or didn't use any at all, that's the problem.

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