I was hit by "System security" virus, and in an attempt to stop its damage I put my XP Vaio desk top off, using the powe button. Now I can not have windows starting I only get the black page with options: start in Safe mode, safe mode with networking and the rest of the list. However, nothing of these options work. If I can at least manage to have the computer running in any mode until I can save my documents and then perform a reformatting.

Can you help? Please.