Help! computer beeps and turns off!

[iguanaman]

I have a Soltek SL-DRV5 MB (KT333) with a 2100XP "b" and it's been running rock solid for months at 2.25 Ghz. I shut down and restarted after a M$ Winme "security update". Now it only gets to the 1st beep and the PS shuts down. First I thought it was the ABS auto shutdown feature but I disabled it with the jumper and no change. Then I thought it was the PS so I hooked up a known good one with the same exact results. I know it can't be the update or anything in software because nothing loads. The computer is NOT hanging.. it is turning itself off as soon as it posts! If I hold the reset in to prevent it from posting it will stay on (big help huh). My best guess is that the mobo has died but maybe someone has another idea to try before I put in my order for a new Nforce2. Thanks:brokenheart:

 

[Unforgiven]

your ram may be on the fritz, check it in another box or download a ramchecker program such as memtest or someting...i had the exact same issue about a month ago and it ended up being a bad stick of ram.

 

[iguanaman]

Thanks for the tip. I have 2 256MB sticks of Samsung PC400. I tried using each 1 seperately (they both can't be fried) and the MB still shuts down after post. I'm afraid it's a dead mobo.

 

[GullyFoyle]

Is your CPU fan spinning?
Perhaps your heatsink is not be flush with the surface of the CPU? (Did you move your PC before the trouble started occuring?)

 

[iguanaman]

It's been running for months with not a glitch and I have an Alpha 8045 H/S which bolts to the board (it's NOT coming loose). The fault happened on a simple reboot nothing moved. It showed me how quickly these complex devices can fail even after running fine for a year! I can't remember another mobo failing quite this way though. I've had plenty that would sit there forever with the fans running and never post
I think I'm going to try an Abit NF7-S...my old BX-6 worked for years.