I have a PIII 733Mhz, 256 MB Ram, 20GB HDD running Win 98. I have been experiencing problems with this machine inexplicably locking up. The only application that is being run during the lockup is a Citrix Server based Web App. The machine locks, blue screens and then reboots itself. I have ran several spyware detection and elimination programs as well as many AV scans. I have removed unnecessay startup items using MSConfig. Also, I think that it is important to note that the hard drive was fdisk'd and formatted and a fresh Windows 98 install was made about 1 month ago.
I have been putting off narrowing down the problem because I am scheduled to upgrade the machine to Windows XP(along with memory upgrades) at the first of the year. My concern now, is that there is some kind of hardware problem plauging this machine. I have run the memory tester available from MS and it confirms that the system memory is Ok. What else should I check? Should I just attribute this problem to Win 98 sucking, or is there a more insidious hardware problem at play here?