XP PC shuts down regularly, unexpectedly
Posted on 2012-08-24
I have a Windows XP Pro SP3 PC that apparently turns itself off some time between 6-8 a.m. every morning. Not sure when it started, as it isn't a PC we checked often until I realized this was happening.
I have a script on another server that pings it every hour on the :45, and e-mails me if it doesn't get a reply, so that's how I know it's happening regularly and within the same time period.
Event logs show events stop displaying around 1-2 a.m. (but that may be because nothing much is going on) and then they pick up again with the startup events where I have turned the PC back on.
The PC is attached to a UPS and nothing else on the UPS is turning off.
There are two scheduled tasks but they both run at like 1:00 a.m.
There is Sophos anti-virus, but it updates every 10 minutes. The updates seem to go fine all night.
It is set to automatically run Windows updates.
I did an in-place upgrade yesterday, but it still turned off again this morning.
There is some software on there that I'm not sure where the disks are and I'd hate to have to re-set up if avoidable, so I'm hoping someone will have some more suggestions of things to check or try before a complete reformat and reinstall. Thanks.