ACER laptop keep restart

[kkchong]

PLs HELP...
My acer laptop keep restart when I turn ON. It detect RAM, CDROM, and harddisk then restart again and again. I press F2 or F12, it cannot go to BIOS also.
I try to use battery / PSU also the same.
I try to take out all the drive including CDROM and harddisk also same problem happen.
I try with my boot disk to CDROM, it read but after a while but it restart again.

Any hero pls help.
thankssssss

[Allan]

1) What was different just before this happened (did you add new hw, sw, was there malware)?
2) What's the OS?

[kkchong]

My OS is Window XP.
I didn't add any Hardware/ Software.
It happen this morning but I still using it at last night.

[Allan]

So it restarts if you boot to a cd too, is that correct? If so it's not a software problem or a virus.

That narrows it down to a piece of hardware and based on your first post I'll guess ram. Download memtest and check the ram http://www.memtest.org/

[kkchong]

How to use it?

[Allan]

Download the .iso file, burn it to a cd, boot to it and run the test.

[kkchong]

OK I will try it.
Thanks a lot.
 

[Allan]

You're welcome