A problem that began with malware lsass.exe error

Hey everyone my computer has more or less crashed...let me start from the beginning:
I had acquired some malware from a torrent site, i ran two separate spy sweeper programs that both detected about 7 malicious files so i removed/quarantined them and rebooted my machine. When i booted up again several error messages popped up on the main screen followed by a notice that lsass.exe would cause my computer to restart in about a minute which following the countdown it did. After a few more restarts the error message did not come up and allowed me to run my spy sweepers again this time they came up with over 100 malicious files! So i removed/quarantined them all and rebooted and continued to get error messages, but the lsass.exe error kept making the computer restart. So i rebooted again in safe mode, still got the lsass.exe error and ran my spy ware programs again which never worked because during the removal process the computer froze every time. Then still in safe mode the lsass.exe error came back and the computer would keep restarting...in a fit of rage i went in and found the lsass.exe file in the system32 folder and deleted it hoping to solve the problem. The computer reboots in safe mode now but only to a black screen that says safe mode that's it. I have tried booting to my XP Cd no luck there...any suggestions i am at a loss any input is GREATLY appreciated.

Thanks,
Caleb