Having an issue on my wife's X250 (windows 10, unfortunately). Seems to be a common one, but it's usually an issue that happens during boot, whereas with hers it's crashing. It'll either blue screen and give the "critical process died" error. OR it'll go black and throw "2100 detection error HD0 (main drive)"

Thus far I've set boot to UEFI only, updated drivers, run Lenovo diagnostics, run chkdsk, opened it up to check connections, and none of it has stopped the crashes. Crashes are at random, and don't seem to be dependent on any running software, unless (and I suspect it may be) it's a background windows process that has become corrupted somehow. Anything else I should try before doing a Windows reinstall?