I realise this isnt a computing website, but the competence of many members on here probably surpasses those on dedicated sites, so i thought id give it a shot.
I would say my computing skills are at an intermediate level, but im really stuck with this problem.
Computer POST'S, i see the bios screen (all details are correct) and then when the computer tries to boot, it doesnt go past the black screen with a white blinking cursor in the top left corner. Usually this will mean that the OS or some system files are corrupt or hdd has failed and at the worst case scenario you may have to reload windows or replace hard drive, but this isnt the case here. The nonsense thing about this problem is that now it wont even boot from the optical drive, it gets stuck on the same screen, so i doubt theres anything wrong with the hard drive either.
Things ive tried (in no particular order):
--Tried to enter safe mode-the option doesnt even come up, no matter how many times you hit f8
--reset bios (have a asus crosshair so did all three, removed battery, hit the clear CMOS button and changed the jumpers over) and restored defaults
--changed bios battery
--checked bios that it recognised the cpu, the speed, the optical drives, the 3 hdd's, their capacity etc-all are correct.
--removed both RAM sticks (computer doesnt post and makes the correct beeping noises-motherboard seems to be responding as it should)
--put one RAM stick in at a time-same results-tried different slots-same result
--disconnected all three HDD's and set the boot priority to optical drive-still the dismal black screen, white cursor (btw tried 3 different OS boot discs so its not the disc either)
--removed everything from the rear of the pc, except the vga and keyboard, removed all pci cards etc, only left the video card in-still the same problem
--changed over video card-same results
--changed over cpu-same results
--removed usb headers on motherboard
--unplugged all headers/cables and reseated everything-same results
--disconnected optical drives and then connected hard drive with OS-no change
I dont want to think its the power supply, because its only around 5 months old, its 600watts and i barely need 300 to run my system. The computer always starts first time, never struggles etc. I have no reason to suspect its my motherboard, but ive tested almost every other component and dont know what else to attribute it to (by power of deduction).
The last thing im going to do is download the latest bios update for the motherboard (version 1207-which the bios is currently already on) and i hope that the old one has become corrupt for some reason and updating it again will fix it. If that doesnt work, im all out of ideas and will have to bring out my sledgehammer.
So please guys, if theres anything ive overlooked or if you have suggestions or know of a different community you think may help, please let me know.