Hello everyone,

My name is Carl and I am new to the list. I feel glad that there is such a great group of people who are so knowledgeable about hardware problems.

I have an Elite Mainboard P6BX-A+ (ver. 3.3e BIOS) which is a Slot-1 board with the BX chipset. I got myself a riser card co I could fit a Celeron 400 onto the Slot-1 slot. I used an ATI Xpert@Play 98
VGA card, a YAMAHA Waveforce 192XG sound card, Quantum 2.5Gb UDMA-2 Hard Disk, and a Creative Infra-CDROM drive 24x. There is 32Mb of PC-100 SDRAM installed.

This seems to have worked well in initial testing. However, on further running of the setup over 12 hours, it seems that the PC would mysteriously freeze (windows and mouse pointers not movable,
system as in a hard lock). If in screensaver mode, the screen would be blank.

On powering down and turning on of the power switch the mainboard starts up, but the monitor is not initialised. Hard Disk and CDROM both appear to have started up, but there is no "energy star"
screen (as the monitor does not receive any VGA signal at all).

Here is the wierd part: If I pull out the power cord from the ATX casing, and then put it back in and repeat a couple of times, eventually the PC would start back up. However, the BIOS no longer is able
to recognise the Celeron speed. I need to get into the BIOS to set the speed again. I am not sure of how to get it out of that "no monitor signal" mode apart from taking away the power cord and putting
it back on a random number of times. Even this sometimes does not work.

This is a crucial PC which I need to be up and running for periods longer than 12 hours at a time. I know it is not the power supply because I just replaced the setup with a new 250W ATX power
supply. Also, I do not detect appreciable heat within the case enclosure or on the celeron heat sink and fan. Could it be the riser card is acting up and I need to change to a better card? Any
reccomendations?

I would greatly appreciate if some kind soul here would be able to help me out. Thank you very much for your attention

Carl Tan
[log in to unmask]

            Do you want to signoff PCBUILD or just change to
                    Digest mode - visit our web site:
                    http://nospin.com/pc/pcbuild.html