Omg, I just had that problem last week. At first, i thought it was overheating, but it was still showing the IRQL is not less or equal. If you can't log on regularly, go into safe mode with networking and install ALL updates that you've missed. There was a major update for BIOS that I never installed and after I instaled it, the blue screen only showed up once before my computer returned to normal. Make sure your drivers are all updated. Since it keeps happening when you're watching videos, make sure your graphics and sound cards are completely updated and not corrupt. That's what fixed it for me ^^