PC keeps shutting down by itself!
Posted on 2006-05-23
Ok, I'm ready for some lateral thinking from my fellow EE-ers, because I've lost my sense of humour about this.
Situation: after a power related computer fault (no longer powers up), I replaced the motherboard, CPU, memory and hard drive. Put Windows XP SBE 2003 back on the drive, put the data on and gave it back to the customer.
Once there, it started shutting down at about 1.5 to 2.5 hour intervals. Here are some thoughts and what I did about them
1. overheating. PC Health monitoring shows LGA775 never gets over 45 degrees C, still took off sides of computer and moved it away from other servers to have clear air around it. NOT SOLVED
2. power supply. Installed a new Belkin surge adapter, a brand new 400W PSU. NOT SOLVED
3. The only parts no longer original are the case and the CDRW drive. I unplugged the CDRW drive data cable and power cable. NOT SOLVED
At this stage, apart from the case, everything is new.
XP SBE complains about the server going down unexpectedly - so currently it doesn't seem to be XP itself doing it. Syslogs don't show any errors apart from trying to connect to a PC on the network that's not there right now and retrying occasionally. I still have some suspicions about that as the possible source, but for the moment I want to eliminate hardware as a cause.
I'm about to go and swap the new memory for another new one. I suspect this will also won't fix it.
Which then leaves me with
- change new motherboard for another new one
- change new CPU (2.6GHz LGA 775 Pentium Celerom) for another new one
- change new hard drive for another new one
But by then there is NOTHING original but the case, and the motherboard, CPU and hard drive are only 1 week old now, so am only swapping them in case the fault lies with them.
Any brainy bod out there able to assist with some lateral thinking as to what is happeing here? This is new to me.
Unless the problem lies with XP SBE Server 2003. I wish I had more detail on the error it is showing to hand, but don't right now - and that's probably an OS question not for this area.