Hi paroots, I guess the only way to find out what's going on is to get a dump file. If you have spare time and would like to help us solve the issue, please do the following:
1. Open regedit, go to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\i8042prt\Parameters and add a new DWORD value called "CrashOnCtrlScroll" (no quotation marks). Make its value 1 (one).
2. Go to Control Panel -> System -> Advanced -> Startup and Recovery settings, and make sure the machine is set to generate COMPLETE memory dump (in the Write Debugging Information section).
3. reboot the machine
4. when the computer restarts wait for the problem to occur.
5. When the problem is simulated (i.e. the machine is "dead"), do the following: while holding down the _right_ CTRL key, press the SCROLL-LOCK key twice. This should cause the machine to "blue-screen", and start generating the dump
6. If the machine doesn't restart on its own (when the dump writing is complete), restart it.
7. ZIP the file \windows\memory.dmp (name it like cnb-dump.zip) and upload it to the following ftp site:
ftp://ftp.avast.com/incoming(note you don't have read access to the site, only write).
8. When you're done, let me know.
Thanks
Vlk