I have a problem with my computer that started about a month ago. The computer hadn't been used for about a month.
Most of the time, probably 19 out of 20 boots, my screen displays a black screen with a white underscore in the top left hand corner before i get to the BIOS. This is before any manufacturer logos appear. It is the usual flashing underscore which has obviously frozen.
I have re-seated all hard drives, my graphics card, removed all cables from my PSU and plugged them all back in again. Problem still existed.
I then unplugged all hard drives and tried to boot and the same problem happened again which rules out HDD failure.
It's going to be a problem with the PSU, graphics card or motherboard but i don't know which.
Before i start replacing parts, does anyone have any ideas on what it could be?
Like i said, it doesn't happen with every boot. Once the computer is on, it works perfectly. Putting the computer to sleep rather than shutting down has been working for a while which is how I've still been able to use the PC.