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System locking up

Last response: in Systems
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April 7, 2009 3:15:03 PM

I built a machine a year ago for a friend and it has worked perfectly up until recently.

All of a sudden whilst using MSN Live Messenger and Internet Explorer the whole computer would lock up and require a forced reboot.

I fitted a new hard drive and did a clean install of Windows Vista. The problem still occurred!

I removed the wireless network card and bought a new USB dongle and to my surprise the problem is still happening!

Could it be the motherboard / memory? Any ideas welcomed as it is driving me insane!

More about : system locking

a b B Homebuilt system
April 7, 2009 3:22:46 PM

My first thought would be RAM. Have you run memtest86+ for a few hours to test for RAM errors?
April 7, 2009 3:23:53 PM

I've just downloaded memtest86+ and will give it a run through tonight.

Any other ideas on how I can find the problem?
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a b B Homebuilt system
April 7, 2009 3:29:26 PM

I would start off with memtest86+. What are the complete system specs? Unstable voltages from a dying PSU can also cause system freezes, but I would focus on the RAM first. If the system runs multiple passes of memtest86+ with no errors then we can go from there.
April 7, 2009 3:31:51 PM

OK thanks. Will post a response to the memory tests tomorrow.
a b B Homebuilt system
April 7, 2009 3:32:35 PM

Sounds good. Good luck!
April 11, 2009 6:44:16 PM

I have run about 8 memory tests through with no errors whatsoever.

Any other ideas?
April 13, 2009 3:22:38 PM

Just trying to bump this thread up a bit.

Cheers
!