Virus winagd32.dll

Recently there is a cacing(VIRU) stick to my computer.
Cause: shutdown blue screen,
Error msg: coooo21a {fatal system error} winlogon process terminated. status 0x00000000 0x00000000
Filename: winagd32.dll
Location: C:/windows/system32

try to use some software to delete it. cause it not able to delete by some antivirus program( but able to deny the spread)
U may try IObit security. mm... i forget which 1 i try.
unlocker...? hehee. u may try, as long as dlete that file.