Computer Restarts in Few Seconds

[umar]

hello Guys
i have Computer with following configuration
Intel Core 2 Duo 2.20GHz E4500
Mother Board DG33FB(/ntel)
2 GB ram with speed 667
giga-byte 8600gts as graphic adapter
80Gb HDD Sata
ATX power supply 400W


my Pc was working fine till yesterday evening but start a problem of getting restarted in few seconds after it restart for second time display also disappears.i have taken out all the components cleaned and placed it back but problem remain there.PC restarts in few seconds
Please advise what going on .....

Bye

 

[woody1191]

If you've cleaned the system you will have ruled out Overheating.
Try running one or both of these Memory Tests
Memtest86 - http://www.memtest.org/
Windows Memory Diagnostic Tool - http://oca.microsoft.com/en/windiag.asp
If the RAM pass the tests try running Check Disk in Windows and also Tick the box to automatically fix bad sectors, And then download your HDD manufacturers test for your HDD.
And post back with your results