PC shutting down.

[coraganda]

My PC is shutting down before it boots up. The closest I got is the Windows 2000 logo. I pulled and reinstalled the connected devices one at a time. I used another video card and switched the RAM. I changed the power supply and clear the CMOS. Same thing. It makes a short beep every now and then during the various stages. My son said it always does that so I do not think they are error beeps. Nothing new was installed.

It allows me to access the BIOS though. But the moment I exit the BIOS screen, it will shut down. It also boots up using a DOS floppy but when I inserted the BIOS update floppy, it shuts down. Seems won't execute a particular process or stage. Is this sign of bad processor?

It won't do anything again if I press the power button immediately after it shuts down. I have the pull the power plug first. Sort of resetting something. Is this sign of PS problem? Some guy told me that I may have busted the new power supply if there is some shorts in the Mobo. But I wonder why it is able to access the BIOS screen and/or boot to DOS.

MSI KT6V, AMIBIOS 3.3a, Athlon XP 1700Mhz, ATI video card, 250 GB, 1GB DDR,

Thanks in advance.

 

[DoomUK]

Perhaps your CPU has died, yes. Or, hopefully, it could be a dead CPU and/or case fan that is causing your comp to shut down via some anti-overheating BIOS function. Unlikely, but possible.

You say you swapped out the PSU? Try a third if you can, and make sure all the power cables are properly inserted.

Check your graphics card too, could have died/is dieing and is stopping your system from POSTing.

 

[vaderpro]

ya check your cpu heatsink/fan: make sure it is secure and the fan is working. My buddy just took in his computer doing the exact same thing and his heatsink was somehow on wrong; overheating the cpu.