First of all, let me say that I really don't know much about computers, but I want to try to fix mine without just trashing it.
My husband was downloading a new poker site and he got a blue screen that said" the windows logon prosess system terminated unexpectedly. Fatal System Error Stop: C000021a."
The operating system is Windows XP. The computer is a Dell Dimension 2400. We are unable to access anything on the computer. This is the only screen that we can get to. The only way to restart the computer is to manually turn it on and off using the power button.
As a novice, is there anything that I can do?