Try running the Error Check, then repeat the Bootkit scan. Yes, looks like the system dropped the _ We need to see if the 2 parts of the error check- scan and fix-will remedy the problem running the fix.bat: ERROR: Can't write first sector of the disk. The MBR is the very first sector of the hard disk; it contains an MBR Bootstrap ... for the disk partitioning software ======================================= It seems we're getting conflicting results: MBS check show clean/okay. Bootkit Remover shows rootkit, followed be error message on attempt to fix. See if the Error Check can help with that sector, the go ahead and run this again: Please download MBRCheck and save to your desktop Double click on MBRCheck.exeto run.(Vista and Windows 7 users will have to confirm the UAC prompt) It will show a Black screen with some information that will contain either the below line if no problem is found: [o] Done! Press ENTER to exit... Or you will see more information like below if a problem is found: [o] Found non-standard or infected MBR. [o] Enter 'Y' and hit ENTER for more options, or 'N' to exit: Either way, just choose to exit the program at this point since we want to see only the scan results to begin with. MBRCheck will create a log named similar to MBRCheck_07.16.10_00.32.33.txt which is random based on date and time. Paste this log to your next message. ========================================= We will continue based on the results of the Error Check and second MBR Check. Please take Windows Updates off of the automatic setting while we're working. It's possible that the Windows Malicious program is reading the MBR problem from a location that has handled the problem, but scans don't recognize 'locations' and can report malware anywhere in the system.