Run OTLPE
- Under the Custom Scans/Fixes box at the bottom, paste in the following
:files C:\atapi.sys C:\WINDOWS\Driver Cache\i386\sp3.cab:atapi.sys /E C:\WINDOWS\system32\drivers\atapi.sys|C:\atapi.sys /replace
- Then click the Run Fix button at the top
Please post the logfile from the fix and try to boot normally.