rebooting

[jim]

just recently my pc has begun to reboot by itself when i
start my comp.This happens 2 to 3 times just as i switch
on the machine and around an hour after it has managed to
stay on.I have downloaded all security patches from
windows update and my anti-virus is up to date(ran full
system scan with no viruses found).I am also behind a
firewall.Any help greatly welcome

 

[Malke]

just recently my pc has begun to reboot by itself when i
start my comp.This happens 2 to 3 times just as i switch
on the machine and around an hour after it has managed to
stay on.I have downloaded all security patches from
windows update and my anti-virus is up to date(ran full
system scan with no viruses found).I am also behind a
firewall.Any help greatly welcome

If the rebooting is random, then it is probably being caused by faulty
hardware. It could be RAM, processor, power supply, motherboard, or
other component shorting out. Here are some generic troubleshooting
steps for hardware:

1) open the computer and run it open, cleaning out all dust bunnies and
observing all fans (overheating will cause system freezing); 2) test
the RAM - I like Memtest86 from www.memtest86.com - let the test run
for an extended (like overnight) period of time - unless errors are
seen immediately; 3) test the hard drive with a diagnostic utility from
the mftr.; 4) the power supply may be going bad or be inadequate for
the devices you have in the system; 5) test the motherboard with
something like TuffTest from www.tufftest.com. Testing hardware
failures often involves swapping out suspected parts with known-good
parts. If you can't do the testing yourself and/or are uncomfortable
opening your computer, take the machine to a good local computer repair
shop (not a CompUSA or Best Buy type of store).

Malke

 

[Plato]

just recently my pc has begun to reboot by itself when i
start my comp.This happens 2 to 3 times just as i switch
on the machine and around an hour after it has managed to
stay on.I have downloaded all security patches from

Check for overheating.