Article ID: 8988, created on Sep 15, 2010, last review on Apr 16, 2012


After upgrading to Parallels Desktop 6, Windows will not start due to:

"Windows\system32\drivers xxx.sys  file is missing" error message


Blue Screen error (BSOD) with a STOP error message


"Disk read error
" error message


Please try to repair Windows installation as described in the following KB articles:

Windows XP:

Windows Vista / 7:

In the event that the repair is unsuccessful please try to restore your virtual machine from a backup, or contact Parallels Technical support.

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