Liza's PC
Topic: work
Her PC would not boot, it displayed this:

"Windows could not start because the following file is missing or corrupt:
\windows\System32\Drivers\Isapnp.sys"

MS website says the file is really damaged, but I wonder how it was damaged. :-(

Then while troubleshooting the PC myself, the "damaged" file changed to "pci.sys"

Good thing I know for a fact that RAM errors can cause such errors (and corresponding error msgs to appear). After a few restarts, the one error message that XP (and MS) is aware of that is caused by faulty RAM appeared.

After > 1 hour of "remote" and actual troubleshooting, I concluded that one of the the two (2) DDR modules is damaged. So I removed it and the PC booted up.

Mission accomplished.