I upgraded my Mum's Win 8.1 PC to Windows 10 and she reported she started having BSOD, which she'd never had before.
Having read reports of old drivers causing problems, I guess this might be her problem so I told her to unplug her USB soundcard, which is the only add on component I think. That didn't solve it, so I pointed her to this page http://www.thewindowsclub.com/kernel...ailure-windows and told her to try step 3, running Driver Verifier Manager, which says to select the "unsigned drivers" option but for some reason she decided to select the "all drivers installed" option!
After rebooting she got another BSOD and now the PC doesn't boot at all apparently. I haven't actually witnessed any of this myself but I'm planning to go over there tomorrow to try and fix it, so any suggestions for things to try would be very helpful. If it comes to it I'll try a clean install of Windows 10 but I hope that won't be necessary. She doesn't have much software installed, Thunderbird, Chrome and a few other things like a Family Tree maker, so it won't take too long to reinstall that but there's all the configuration of Windows that takes the time.