Power Trouble Blinking Led Light

[consultjb]

I have searched these and various forums, searching for an answer but to no avail, nothing matched my situation.

I have a Prescott Pentium 4 2.4 GHz machine running Windows XP Professional SP2.

The computer has a problem staying active in a current Windows session. I can't start my computer other then by hard reset. Applying the front power button no longer performs. After performing a hard reset, it boots into Windows, but only for 5 minutes. After which it shuts off and the front power led remains blinking.

Troubleshoot help and advice is most appreciated.

[George Hallam]

How old is the system?

Have you changed anything in it lately?

What are the rest of your system specs?

And o ye welcome to http://www.pcguide.com/ubb/pcgubb.gif ;)

[jlreich]

I can't say for certain with your system (make and model please?), but often a blinking power button means a bad power supply. Assuming the system is not in standby.

[LadyGrey]

Could also be a failsafe for the computer? Maybe the heatsink fan has gone and it's shutting off and not letting a normal start happen to protect itself? I've run across a few computers that will do that.
Maybe HDD going or gone bad? Power supply is very likely too as jl has suggested.
Just some thoughts.

[consultjb]

I have looked into your suggestions by testing the following components:

Power Supply
Hard Drive
Memory
CPU

All seem to be functioning normally.


I am now experiencing BOIS Beep Error codes at beginning of POST that
were not autible or visual in eariler testing.


I am experiencing two short beeps at the start of POST, produced by the
system speaker.


Some of you asked for the system specs, and I appologize for not displaying
them sooner I did not have access.


MicroStar Inc. MS-6728
Pentium 4 2.4 GHz
2.0 GB Memory
Western Digital 80 GB Hard Drive

[LadyGrey]

Found this http://www.msicomputer.com/support/sup_tshoot.asp when I was looking around.
It may help some.
2 short beeps seems to be related to parity circuit failure it says.