PC wont start up

[Steve3596]

I built a computer roughly a year ago, and recently realized that I wasnt getting the desired outcome from my memory that I put in it. I downloaded the newest bios for the Asus M3A78-T motherboard and was able to get my G-Skill DDR2 1066 memory to actually run at 1066 rather than the 800mhz it had been running at. This worked fine for a boot up with all things running correctly, I attempted to overclock my system for the first time under the new BIOS running it at 5% overclocked. The PC failed to boot and brought me back into BIOS. Not knowing that I needed to change the BIOS features back to normal I entered exit and discard changes, and the computer started up normally, but I noticed the computer still was not overclocked and the memory was back to running at 800mhz. I tried once again to reboot my computer, and this time it wouldnt start. I get absolutely no picture on my screen so I opened up my case to switch the jumper, I do this and I still get no picture. When I turn on the PC all the components light up but the fans noticably run slower, and no picture. So I removed the battery and attempted it again, to no avail. I disconnected all of my components and reconnected them, no dice. Now I have no Idea what to do, I dont know if anything is broken, it all lights up. Any suggestions?

I also forgot to mention, there are no beeps from the motherboard when I start up, I have tried removing all RAM, each component and what not and still no beep from the motherboard

also just realized I do not even have a chassis speaker so that would explain the no beeps, but still have stripped the computer all the way down to 1 stick of memory, psu, motherboard, and cpu to no avail