So my brother received the new PC I built for him safely, booted it up and I connected via TeamViewer and showed him his way around.
Then, in the process of unplugging his printer from the USB port on the back, he somehow managed to knock the power lead, killing the power!
Since then, he's been unable to boot into Windows, just getting a BSOD every time after the "Windows failed to shutdown properly" and selecting "Boot normally". Strangely, the only other option on this screen is Repair Windows, no Safe mode or Last Known Good Config.
Luckily I've got a Win7 x32 VHD on there (Portable version) which he can boot into. I got him to remove the Nebula tuner PCI card, as that had caused some issues before but I thought I'd sorted them and it was working fine before I sent it to him and then I used the VHD to load the Win7 x64 Hive and set the two Nebula drivers to Start=4 to disable them. Still BSOD.
I also used BootIce to add another entry to the Windows boot menu, Win7 (Safe), set in BootICE to Safe mode, but selecting this just gave him a BSOD as well. However, it did at least produce the Safe Mode, Last Known Good Config, etc options but Safe Mode with Networking and Last Known Good both BSOD.
He managed to boot it with Safe Mode (without networking) but obviously that doesn't allow me to connect via TeamViewer to sort anything out. When he booted into Safe Mode (without networking) it said it was reverting some updates. It had installed about 7 Windows Updates some time before the power got cut but hadn't had a chance to reboot, so they may have not been installed fully and maybe that's why it reverted them, I'm not sure.
I've got a EaseUS ToDo Backup System Image that he could revert to (I added the Boot disk to the grub4dos menu) but that's the nuclear option as I think I made a few changes since making that and it will be tricky to talk him through using that, and I won't be able to connect to his machine to do it for him, so I'd rather try and fix the problem if at all possible, so if anyone can help, I'd be very grateful.
There's some issues with the VHD as well but that's a separate issue, so I've made another thread about that.