theoQ 0 Newbie Poster

While perusing Facebook, my avast anti-virus blocked a Win32 Alureon virus. Firefox crashed then computer went to blue screen with some words at top (don't remember what it said). No control. Disconnected power. Turned computer back on, computer starts, shows bios screen with F2 and F12 only, then goes to black screen with white cursor running but does nothing else. No control over anything except F2 and F12 on bios screen.

Any ideas?

Dell Dimension E310
DV051 Intel (R) Pentium (R)4 CPU
2.80 GHz 2.79 GHZ 504 MB RAM
Service tag 9D9TK91
ESC: 203-935-971-25

Running Windows XP
Media Center Edition
Version 2002 Service Pack 2

This computer has been completely wiped and rebooted (F11) once already