Why does my computer keep shutting down?

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PriscilaLila - Jun 16, 2010 at 09:30 AM
 Priscilalila - Jun 16, 2010 at 10:55 AM
Hello, I have a system that is almost entirely rebuilt. Its originally an HP m7470n. Changed mobo a year ago, changed hard disk drives also around a year ago. Around 3 months ago i changed all the fans inside the case. I have one 92 mm 3800 rpm case fan, one fan in the mobo and i changed the fan and heat sink on the cpu. The cpu fan is 4200 rpm. I thought the problem was overheating, but after changing the fans it didn't seem like it was overheating. I would check the system temperatures and it was all ok. So this week i changed the power supply. I bought a 550watts psu with a 120mm fan. I thought i had fixed the problem, but after a few hours it shut down again. The system was originally windows xp, but i have reformatted it to windows 7. Nothing seems to help, i thought about changing the graphics card. Its one of the only things that is still original to the system. Usually when it shuts down, i'm watching video or download things. I have already cleaned everything on the inside. I've seen online that alot of people have had this problem, but doesn't seem to get it resolved. Please any help will be appreciated.



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closeup22
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Jun 16, 2010 at 10:50 AM
Hi there,

In what lapse of time does it shutdown?what are the applications running when tis occurs?please give related informations.

Thanks
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Usually it shuts down when watching videos, it can be on you tube, or trying to watch a dvd movie. Sometimes when downloading something from the internet. There is no specific lapse of time for the shutdown to occur. Sometimes 5 minutes after the pc is turned on, sometimes after hours. When the pc shuts down, the power on light of the computer keeps on blinking from blue to orange repeatedly.
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