c:\windows\system32\drivers\lsass

umm… my sister was useing the computer and a alert came on with c:\windows\system32\drivers\lsass so she deleted the file… now when ever i start my comp up i get a message saying c:\windows\system32\drivers\lsass could not be found.i always put my files in the chest but my sister deleted it this time help please.

o and err it was a trojan-gen{other}

trojan-gen{other}c:\windows\system32\drivers\lsass

Hmmm… I was Googling and did not find a place to download this specific file.
Can you try to overinstall Windows? Overinstallation can solve the problem and you won’t lose your programs, settings, data, files, etc.
Just choose ‘Repair’ installation of Windows and install ‘over’ the old installation.
Are you using XP?

http://support.microsoft.com/default.aspx?scid=kb;EN-US;315341
http://support.microsoft.com/default.aspx?scid=kb;en-us;Q314058
http://www.webtree.ca/windowsxp/repair_xp.htm

is reinstaling it like when u start up ur comp and press f8 or something cuz a few yrs i reinstalled my comp cuz of a virus and it crashed saying i was missing files im scared that this might happen again,umm i tryed a system restore this time when it started up i got the alert but i put it in chest i still get the error when i restart my computer.

If the file was lsass.exe, it shouldn’t be in the c:\windows\system32\drivers folder.

The message you see is because the key or shortcut pointing to it is still on your computer.

The real file is located c:\windows\system32

should NOT be confused with the legitimate Windows lsass.exe process, always located in the Winnt\System32 or Windows\System32 folder

from several searches for the file location