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Windows Error on startup - "The type of file system is RAW" - still boots but soon crashes

Last Modified: 2013-11-17

I've had a sick laptop brought to me and I need some help.

On start up each time Windows starts up it always gives the following error message

Checking file system on C:
The type of file system is RAW
AUTOCHK is not available for raw drives
Windows has finished checking the disks

This is not displayed for very long.

When actually using Windows sometimes it is OK for a while but at least 50% of the time and all of the time eventually the PC will freeze.

If it does not freeze right after Windows starts (Explorer just seem to stop responding) it does sometimes give the error message:

"Failed to get sessions notifications"

Does anyone have any idea where to start with this. I noted there is a restore point before the problems were reported to have started but I would like to get a better understanding first in case it made things worse.

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