Black Screen on Startup - Hardware & Software

So my computer has been working fine recently up until today when I turned it on and nothing comes up on screen, and pressing F8 doesn't do anything. These are my specs: Nvidia GTS250 1GB AMD 3GHZ Quad core 4GB Kingston RAM ASROCK K10N78m Corsair GS600 I've tried using different moniters, cables, my old Radeon HD3850, taking out the RAM and putting it back in again and trying my old power supply, an ancient CHIEFTEC model, and when I tried doing that I was met with a loud high pitched tone that didn't stop until I turned off the computer. I'm really stumped as to what to do here, all the components turn on with my computer but I'm just not receiving any images.

If your not even getting the BIOS screen then maybe your motherboard has a fault, could you give more details about the startup, e.g. Do you actually see anything at all on the screen, a BIOS screen?? Are any of your devices e.g. mice and keyboard active at all?

[QUOTE=simonjb;31352731]If your not even getting the BIOS screen then maybe your motherboard has a fault, could you give more details about the startup, e.g. Do you actually see anything at all on the screen, a BIOS screen?? Are any of your devices e.g. mice and keyboard active at all?[/QUOTE] I get nothing at all, just straight to black, so I can't see if my keyboard and mouse are working.

I just realised that I could test my keyboard by using the caps lock key, and it doesn't turn the light on. Also the light underneath my mouse isn't on. This means it probably is my motherboard, but why do the fans on the cpu and graphics card work but not the external components?

[QUOTE=Amsay;31368916]I just realised that I could test my keyboard by using the caps lock key, and it doesn't turn the light on. Also the light underneath my mouse isn't on. This means it probably is my motherboard, but why do the fans on the cpu and graphics card work but not the external components?[/QUOTE] Fans are hooked directly into power and the speeds are controlled by the motherboard via a digital potentiometer. That's what I'm guessing. But basically if the PSU provides power the fans will spin because of how important they are.

This happend to me awhile back. my pc was overheating alot and restarted itself and one time it just turned off. When i rebooted it the screen was just black, no bios, no beep, no nothing. For me one of my psu rails had broke. Could be a bad psu? can you try your pc with a diffrent psu to check your companents? Thats what it was in my experiance. hope you get it fixed

[QUOTE=ChubZz;31370930]Could be a bad psu? can you try your pc with a diffrent psu to check your companents?[/QUOTE] I did try that, but it started making a loud whining noise and it still showed a black screen anyway. After I got this new motherboard I put everything back together myself, so here are a few pictures I took of it so you guys can see if anything is hooked up wrong: [IMG]http://filesmelt.com/dl/pc1.jpg[/IMG] [IMG]http://filesmelt.com/dl/pc2.jpg[/IMG] [IMG]http://filesmelt.com/dl/pc3.jpg[/IMG] [IMG]http://filesmelt.com/dl/pc41.jpg[/IMG] [IMG]http://filesmelt.com/dl/pc5.jpg[/IMG]

So I got a new motherboard and, surprise surprise, it still doesn't work. However the cd drive opens now when it didn't before. I have no idea what could be causing this now.

Looks like there's a standoff missing in the fourth picture.

Try taking out one ram stick and booting it up, if it still doesn't work take that one out and switch to the other one Same thing happened to be before, it was caused by a faulty ram stick