system
75
if
- CTRL ALT DEL or
- the reset button or
- pressing the power-button for 4 seconds doesn’t help:
pulling the plug persuades even the most stubborn PCs to shut down… ;D
afterwards:
- try rebooting to last known good configuration or in SafeMode (F8-Boot)
- if that doesn’t help: can you boot from XP-CD and see your data then ?
and give us more info about the virus location and system/Win-info 