Windows Vist has begun running unusably slow and I have been unable to un any Anti-Virus software. I've had MSE installed and when it failed. I disabled it and attempted to install MalwareBytes and HouseCall, however neither will not run. I have successfully run rKill, but even after running it, Anti-Virus will not run. I attempted to run DDS (In Windows Safe Mode). It launched and appeared to hang -- no logs for 45+ minutes.