just as an afterthought i decided to reboot from my windows xp system disk, and that goes straight to the blank screen as well, so apart from the stall half way through the sata check, it could be windows failing.
Does the screen go blank because the PC shut off? Hope so, meaning the PSU at least had the decency to shut itself off from the overload. If not, it may have instead passed who-knows-what voltage to your system, causing the crash. Hopefully it did not do any damage. Hopefully.