I have a desktop running Windows XP Pro W/SP3 that will not boot. It give an error of LSASS.exe Application Error when it starts up and when you click on OK it just reboots. I am unable to boot into any Safe Mode option. Restart with last known configuration does nothing as well. I am able to boot with a bootable CD to see if it will even load. I have tried to use a Windows XP disc to repair the install but it gives me a BSOD after loading all the files and before it starts up. Looking for any help possible. I know there was a lsass.exe virus at one time and not sure if this is it or not. Thanks in advance.