Win2K SP2. Hardware: AMD Tbird 1.2/Asus A7V133/IBM 75GXP 30G HD (FAT-32, no partitions).
I was upgrading software (ZoneAlarm) from previous version to latest version v. 2.6.357. Was logged on as Administrator. Upon re-boot in order to complete the install process, I accidentally logged back on with my User account. Win2K didn't like this one bit. The BIOS loaded, found the HD, Win2K started to load (the desktop appeared) but Win2K would not complete loading - it froze before all icons and desktop completed appearing, and the HD began making repetitive noises at fixed intervals.
I suspected a file structure problem, i.e., some system files got blown out during the botched install of the ZoneAlarm update. I first tried to re-boot in SafeMode -Last Known Good Configuration. The system then appeared to enter 'fix' mode where it checked the disk for errors. There were some messages there, but the screen did not stay up long enough for me to read the entire message (I did notice however the first item listed was 'BOOTEX.LOG 1st Allocation Table is Not Valid').
I tried normal re-booting several times but Win2K kept hanging at the point just before completing the desktop, and HD making same reptitive noise, as if seeking but not finding something.
Any ideas, tips or suggestions are most welcomed.