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Tm.sys - 0xc0000221 Error
This tower was upgraded to 10 (from 7) about 18 months ago and has performed admirably, but a few days ago I started getting a load failure message when I booted. It took me to the Troubleshoot screens where I found that Startup Repair could not identify or correct the problem.
I then went to the command prompt and ran a chkdsk which found no errors. I then ran sfc scannow which found no integrity violations. I then ran both fixboot and fixmbr commands which completed successfully. Rebooting showed that nothing had changed. I then went to the system Reset which retains your personal files but resets Windows. That eventually gave me the following 'The operating system couldn't be loaded because a required file is missing or contains errors'. Underneath that it gave me the file name of tm.sys and the error code of 0xc0000221.
A forum search on tm.sys returned nothing. That seems weird - nobody else has ever had this error or had a problem with that file?