Virus Lsas. Blaster,Keyloger

Hello,
I was trying to follow the intructions how to manually remove this virus. I can't even get task manager to come up so that I can go to processes and delete the long number so that I could go to users and take off my blocks so that I can shut down and go into safe mode to run my anti virus thing and to set my computer back to a much earlier date...Can you help me?

Thanks in advance..