My brother just ran Malwarebytes on his laptop to remove what we thought to be win32.zafi.b. It found 18 items after the scan had ended and asked to restart. He clicked "Yes," and the computer began a restart loop. It'd make it to the Gateway boot screen, then the Windows XP splash screen, and start over. After the sixth time or so he elected to manually shut the computer down and attempted to reboot it from there. The startup was partially successful. It asked him to start windows normally (didn't work). He tried again, and chose to run it under the "Last Known Configuration." Now, the computer will start up and allow him to log in under whichever name he wants but after doing so, nothing responds to clicks or keyboard commands. The mouse moves and all but like I said, it can't even highlight stuff and the keyboard becomes totally unresponsive after the login.
Any help would be appreciated.