I have a HP Pavilion a1430n Desktop Computer running Windows XP Media Center Edition 2005. No password was established for the single user. Normally the Computer would startup and go directly to my Desktop from the Welcome Screen without a login screen. Now a login screen appears with an icon for “hp_Administator”. When I click on the icon the computer appears to start but quickly goes into “saving settings” and “logging off”. An additional attempts gives the same results. Starting in Safemode the “Administrator” and “hp_Administrator” icons appear. Clicking on either provides the same “saving setting” & “logging off” activity. I can not access my computer. Any suggestions?