My sons's laptop was suddenly affected by the Blue Screen of Death, apparently due to error 0xc0000185. My efforts to fix things without having to do a clean reinstall of Windows 8.1 (by using an ISO on a USB stick and choosing repair) have not been very successful. They have led to me getting various messages including error 0x8007051a (unable to do system restore), and another telling me that the drive where windows is located is locked. Initial attempts to run CHKDISK /R and SFC /SCANNOW brought up the message Windows Resource Protection could not perform the requested operation, then when I got finally got CHKDSK /R to run, everything was apparently okay.
A successful run of SFC /SCANNOW, however, resulted in the following, which I'm hoping someone can interpret: