Afternoon all! Am trying to help out a neighbour who appears to have suffered the unfortunate issue of having had Windows Update invalidate his Crucial MX500. He updated the other day through normal channels but since then has become stuck in a BSOD loop. None of the recovery options appear to work (we've tried most of them), he can't get into safe mode, strangely and he gets a BSOD error (0xc021a) when he does leave it to try and boot to Windows - the logo appears, the dots spin, then the BSOD, followed by a reboot to the automatic repair options. I've looked that error message up as it was new to me and it does seem to be a fairly recent one according to some sites, related to Windows security logon services. Things he's tried (although I'd have to check to see if a complete list): uninstalling updates (via advanced boot options) system restore (via advanced boot options) but no system image to recover start-up repair (via advanced boot options) restore registry backup DOS trick (I'd need to confirm, but I think this might be the one where you rename the old reg file to "old" or "backup" or similar and let it rebuild) changing startup settings to safe mode and low res all external devices unplugged recovery mode (?) Only options left appear to be to remove everything or keep only the files, both of which he's reluctant to do as he uses it for music production and it will lose his workstation settings/templates etc.. He's managed to copy most of the stuff he needed from the SSD by booting the old HDD that it replaced (no such issue with this drive) and moving things over. Anyone got any additional suggestions we can look at? Thanks in advance!