I've had this virus for quite a while DLLHOST.exe when i had it stuffed my antivirus programs and wouldn't let me reinstall it. I checked my registry it can't be found. But it kept blocking my in internet. So I reinstalled Windows xp and deleted my old windows folder (I don't wan't to format over my files). After install I get on the internet and my computer restarts for no reason, checked nothing in the registry still but I checked Windows Task Manager and DLLHOST.exe is in the process. Odd I have a clean windows install but the virus is still there. Why?