Hi all, After restarting my computer after a scan, my windows bootup is not loading explorer.exe anymore. I can see my desktop wallpaper but nothing else. I can get into taskmanager and access all programs that way, apart from windows explorer. This is the start of the logfile, which I think may be the cause of the problem. Malwarebytes' Anti-Malware 1.31 Database version: 1478 Windows 5.1.2600 Service Pack 3 10-Dec-08 10:56:16 mbam-log-2008-12-10 (10-56-16).txt Scan type: Full Scan (C:\|) Objects scanned: 160927 Time elapsed: 57 minute(s), 54 second(s) Memory Processes Infected: 0 Memory Modules Infected: 1 Registry Keys Infected: 10 Registry Values Infected: 6 Registry Data Items Infected: 3 Folders Infected: 4 Files Infected: 20 Memory Processes Infected: (No malicious items detected) Memory Modules Infected: C:\WINDOWS\system32\mt49hub.dll (Trojan.Agent) -> Delete on reboot. Registry Keys Infected: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\explorer.exe (Trojan.Agent) -> Quarantined and deleted successfully. When I try to start explorer manually it says it cannot locate the file. I locate the file under Windows and try again, but again get the same error. Very strange! Does anybody know how to fix this? I do have an old drive with the same winXP on it (but probably fewer updates). Could I possibly copy the old explorer.exe file over to my current HDD? Many thanks, Bbow