Hard Drive Controller Conflicts
Symptom Hard Drive Controller Conflicts in Device Manager
Resolution:
Boot using Safe Mode, Remove the the very first Hard Disk Controller from Device Manager Boot to a: and run Fdisk /mbr twice, and then Sys c:.
Rename the autoexec.bat and config.sys.
Run debug
-o70 16 (o the letter as in Orange)
-o71 16 (o the letter as in Orange)
-q
Then reboot, go into cmos and save the settings and exit
Now boot into windows using Safe Mode again.
Next Go to Start, Shut down, and Restart the computer Normally.