Hey all. Weird one. I had a frozen shoulder so wasn't on my sig pc for several months. Switched it on the other day and the bios had reset date/time. I found that out after getting select a boot manger. Weird I thought but reset everything in the bios and booted up. Logged in, started updating Windows updates and then a bsod. Bios then didn't show my nvme. Anyway, replaced the CMOS battery, that sorted the date/time and the nvme was present. Booted into the windows login, entered password and bsod again. The nvme keeps disappearing and reappearing - on a cold boot it's always there, not always when rebooting. Startup repair wouldn't work and nor could it do a system restore. CMD prompt bootrec commands come back as invalid requests. Sound like a dead drive? I'm thinking of updating the bios, not done that for a year and a half, but I'm not sure why that would help as it was ok before I left it alone for a few months. I guess my options are, update bios and then fresh install if that doesn't help. Beyond that I think it's still in warranty. Is there something else obvious (other than it being a dead drive?). The whole rig is about two years old and worked flawlessly until I left it alone for a few months. Bloody diva. Cheers.