Microsoft and Some Third Party Scanners
Microsoft Security Essentials
Microsoft Safety Scanner
Vipre
Norman
Eset
TDSkiller
McAfee Stinger
Virus Information Alliance (VIA)
Secunia Personal Software Inspector
Other Tools (read about them before using)
AVG Rescue
WinPatrol
BitDEfender TDL4 removal
ESET Smart Installer
F-Secure online scanner
F-secure Rescue CD
GMER Rootkit remover
Hijackthis
Kaspersky Virus removal tool
Malwarebytes free and Pro
McAfee Stinger
Microsoft Safety Scanner
Norman Malware Cleaner
Norton Bootable Discovery Tool - Fix infected PCs
Online Virus Scanners (10 tools)
Paragon Rescue Kit
RKill
Rootkit revealer
Sophos Anti Rootkit
Spybot
SuperAntiSpyware portable
TDSSKiller
Threatfire
Trend Micro RUBotted
Vipre Rescue
Virus Info Alliance
Windows Defender Offline (32-bit and 64-bit)