The most common error that occur during CHKDSK execution in Windows 7 is "An unspecified error occurred (766f6c756d652e63 3f1)". This article explains when this error message is encountered, what can be the reasons & possible solutions for the issue.
This unspecified error 766f6c756d652e63 3f1 is mostly encountered during the execution of "chkdsk /r /f C:" command. Besides, you can see the same error while rebooting or booting the system.
Some of the reasons are listed below for an unspecified error code 766f6c756d652e63 3f1 while running Check Disk:
There are some solutions that can fix error code 766f6c756d652e63 3f1 in Windows 7, 8, XP, Vista when running CHKDSK:
After going through all the above steps, if you still find an unspecified error 766f6c756d652e63 3f1 on startup that means your computer is in an unhealthy state & your computer files are either highly corrupted, damaged or lost. Moreover, they cannot be recovered by CHKDSK or other system utilities. As a result your data can be lost in a wink. So you must go for the alternative i.e. CHKDSK file recovery tool that helps you in recovery of lost CHKDSK-related files, deleted data & inaccessible files.