Earlier today, I was installing a printer. The installation hung about 3/4 of the way through and wouldn’t allow me to break the function through alt F4, Ctrl-Alt-Del, etc, so I reset the computer. After resetting, the Welcome screen (which had been disabled) appeared, with only the Administrator available as an option. According to the Control Panel–>User Accounts, the only two accounts that exist on the computer are the Admin and the guest (which is disabled). When I checked the NET USER command from the cmd prompt, there was an account labeled XXXX_ai (where XXXX is the name of the account I had been using). Further, all of the information from my user account is still present in C:\Documents and Setting; presumably, all of my programs are still loaded, but nothing that didn’t also install itself to the administrator account as well appears.
Hitting F8 during startup so far has only yielded a “Boot From…” dialog; no chance to select a last working configuration or safe mode. Any ideas?