Why does my pc shutdown suddenly after few minutes?

January 21, 2015 at 08:48:29
Specs: windows 7, intel dual core E5700 3.0ghz/ 2 gb ram ddr3
My desktop shut down suddenly after 5-10 minutes. Both system fan and cpu fan are still running after shutdown. Keyboard and mouse are still on. The monitor says no signal. But I am 100% sure that it is not monitor problem. I already re apply thermal paste on cpu, but still nothing happens. My PSU and HDD is running good, so its not the problem.

When I navigating on the bios setup it shut down suddenly. When I am installing windows operating system at the middle of the progress it shutdown again suddenly. Note that when I installing windows I already format the HDD this mean that there is no windows installed. So its not on the control panel settings that I can change the options.

after the sudden shut down. its very hard to turn it on again. i have to wait for few moments. reset jumper, reseat all the parts and whatsoever just to turn it on again. but after few minutes......... shuts down! again. with running fans and keyboard/mouse lights on

By the way here is my specs:

msi g41m-p28
intel dual core E5700 3.0ghz
2 gb ram ddr3
inno3d gf 8400 gs
500 gb hdd
600watts PSU

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January 21, 2015 at 09:14:46
Best run this on it if you can and see what the temperatures are like, particularly the CPU.

I assume you used the approved method for that particular CPU when applying thermal paste.

Always pop back and let us know the outcome - thanks

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January 21, 2015 at 15:09:31
"I already re apply thermal paste on cpu"

Are you experienced at doing that? Did the problem start before or after you re-applied the paste? Did you remove all traces of the old paste from both the CPU & heatsink, then re-apply using the horizontal line method? Did you check the CPU temp afterwards?


"600watts PSU"

That tells us nothing. A good quality 300W PSU can be better than a cheap generic 600W. Please post the make/model & amperage specs.

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January 21, 2015 at 21:11:11
You seem to have made a lot of assumptions on what is not the problem but I do not see enough details to confirm that these assumptions are correct.
Why did you reset the heat sink?
Did you test the memory with Memtest?
What are the temperatures (all) as from BIOS or from HWMonitor? Which one(s) constantly climb if you let it sit idle and watch the temps?
What power supply exactly do you have?
Any overclocking (CPU or GPU)?
Have you tried resetting BIOS to defaults and then setting CPU, RAM, Graphics, Time/Date, etc.

You have to be a little bit crazy to keep you from going insane.

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