I have a fairly new AMD X2 4000+ machine running Windows XP Home that seems fairly unstable. Sometimes it will lock up when I log in to Windows, and nothing but the mouse cursor works (can't even click on anything, and typing doesn't do anything).
When this happens, a reboot doesn't seem to fix the problem, however turning the power to the machine off for a minute seems to make it work again (learnt this trick deal with Dell PC's at work with faulty capacitors on the motherboard).
Anyway, about 3 times a CHKDSK has kicked off automatically during boot-up (not actually sure if it was straight after one of the occurrences described above) and fixed issues with file system indexes by deleting files, including a system file COMRes.dll (which is causing all sorts of annoyance - have logged a separate question on how to replace that). I've run a CHKDSK /r manually to do a thorough check of the hard disk but that didn't find any issues.
The key question is what could be causing CHKDSK to delete files? If it's likely to be a hard disk issue, then it would be great if someone could suggest a free diagnosis program I could run to find out more.
Thanks heaps in advance!