Thnx for the quick reply. To answer your questions :
- I'm using Win XP, I trust it is up to date.
- there are no firewall, and no other AV installed (I used to use Kaspersky in the pasrt, but I uninstalled it months ago). Also, no security programs installed.
- events are not showing anything useful, however, from time to time, I have a "blue screen of death" saying PFN_LIST_CORRUPT. This may well brings us back to the message displayed by Avast - unless there are many files corrupted in the machine.
What do you mean by "search the board for the 00003EE error" ? what board ?