Around 3 weeks ago, i got a blue screen, and it said that it was fixing something, then later i got an error, saying drivers were missing and pc couldnt boot even in safe mode, and since then, when i turn my pc on, it just has a black screen, with no power in external devices, my pc should turn off when in boot screen if i press the power button, it did earlier, now it does not, i have to hold it for 5 seconds for it to shut down, also while it worked, there was a red light on the front panel with a battery under it flashing, now that stopped, and i've tried everything, checking the cables, switching the cables, nothing worked, so i guess either cpu or my hdd died, it sounds like before when turned on, but its just showing a black screen like its stuck in pre boot mode