My laptop was functioning perfectly fine yesterday, and then when I went to "wake it" from sleep mode, it was frozen with the screen black and nothing was happening / the system was unresponsive. After waiting about 20 minutes, I just manually powered it off.
When I attempted to start it back up, I got a BSoD which appeared for a split second before the laptop shutdown and attempted to start again. I managed to read the BSoD for the split second it was up, and it said Unmountable_boot_volume.
When I try to boot from a Windows disc to either click "Repair my computer" or "Install now", it just freezes.
What are my steps to a solution here, whether that solution has to be reinstalling Windows or not?