Computer Help forum


Computer shutting down randomly

by altruist77 / June 1, 2012 6:47 AM PDT

Before I describe my problem, I would like to present my computer configuration
Assembled by cyberpowerpc
-Intel Quadcore 2.66 GHz Q9450 - liquid cooled
-8 GB (2 x 4 GB) Corsair RAM
-EVGA nforce ultra 790i motherboard
-EVGA NVidia 9600 GT 1GB graphics card x 2
-System HDD - 74GB WD Raptor 10000 RPM
-Windows 7 64 bit OS

In the last couple of weeks, my computer would freeze up after a couple of hours or even after four hours or so. The entire screen would freeze and the sound would freeze. I would be forced to restart it with the reset button. It would often not reboot after taking a long time to perform the bios check of memory and HDD etc., mentioning that either the boot manager was corrupt and I should use the installation disk to fix the problem or it would mention that some USB device was removed or inserted.
In any case, if I waited for a while and then switched on the computer later, it would boot up normally after running a normal bios check. I thought that this could be due to over heating of the components. So I opened up the system yesterday and found that the fan on the graphics card had fallen off. So I reattached it.

Now, I have a new issue: The entire computer just randomly shuts down as if there was a power outage. There are no warnings, no errors presented. When I restart, it would again shut down after the bios check when it tries to boot windows.

When I shut it down completely (turned of the power switch of the SMPS unit) waited 10 secs and then turned everything on, then it started fine.

I would be very grateful to anyone who could provide insight into this issue.
Thank you
best wishes

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All Answers

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A few ideas.
by R. Proffitt Forum moderator / June 1, 2012 6:52 AM PDT

The SMPS detail eludes me but those 9600 video cards are getting a little old. Did you try replacing the heat sink compound on all heat sinks?

And how about using a single card?

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You failied to list one of the most important components...
by VAPCMD / June 3, 2012 2:19 AM PDT

what PSU do you have and roughly how old is the system ?

How long has it been since you've cleared the dust bunnies out of your system ?

How about the CMOS battery .. is it the 'original' ?

How many HDDs and CD-DVD Burner.

Have you reapplied thermal grease/paste to the CPU, the chipset coolers, GPU fans, etc., ??


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If your computer shuts down at random
by yueyawan / June 3, 2012 6:23 PM PDT

If your computer shuts down at random, you should find out the cause of the problem. Once the cause is known, then it would be easy to fix the problem. Before approaching a computer technician, you can look at different things and you could possibly fix the problems. The computer may unexpectedly shut down for various reasons. An error in the registry, virus, bugs in software and hardware problems, some of the reasons that could cause computer shutdowns. Check if the computer has turned itself off due to overheating. If multiple programs are running on the computer, the system generates heat. If the system is not cooled, you can come by accident shutdowns. This is very common in the summer, you will find, if you have an effective cooling fans for the system. Every problem in the RAM could also lead to accidental disconnection. Make sure you have enough RAM for the system to keep in good condition. Also you should look for unnecessary programs that could be run without your knowledge to verify. Disable all unnecessary programs in "msconfig". Once you do this, you can see that the computer runs faster. My computer randomly shuts down if there is any problem with the hardware. The computer may exhibit problems when the hardware is not compatible with the installed system. Another reason for random shutdowns with computer viruses. The virus could lead to corrupt files, resulting in computer shutdowns. So you better run anti-virus Effective toll on your system.

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