help what did I do

[Skeletonfish]

I need help 

 

so i was trying to overclock my GPU with MSI afterburner (HD6670 gigabyte http://www.gigabyte.com/products/product-page.aspx?pid=3832#ov) it was working. but when I shutdown my computer to go into the bios and play with my CPU settings and it wont start. I will hear the beeps that usually occur on start-up but nothing appears on the screen 

what did I do?

[Godlygamer23]

How many times have you tried turning on your computer?

[Skeletonfish]

I think around 5

[Godlygamer23]

What were your temps like?

[Skeletonfish]

I was hitting 80^oC ish while running MSI kombuster 

[Godlygamer23]

Interesting. Those are perfectly acceptable temps, so I wonder what happened.

[penance]

Are you sure they are the normal beeps and not posting error beeps? Listen to see if there is a pattern. You may also try resetting the cmos to see if one of the settings you changed in the bios borked something.

[Skeletonfish]

I'm sure they are normal beeps. But could it be my power supply not being able to keep up I only have a 400w. Also I put in an older HD 4670 that I had lying around and it worked.

[Jarmore]

Yeah sounds like a powersupply thing, if you boosted up the clocks off the CPU and the GPU then they may be now drawing too much current. What brand is the PSU because even a 400 watt psu should be okay with that sort of gear. I say resetting CMOS is your best bet, returning all clocks to base and it should be okay.

[Jarmore]

Or take out your GPU and boot into the bios and lower all your clocks back down to a nominal level.

[Skeletonfish]

so reset my CMOS still wouldn't show anything on the screen. so I put my old GPU in there and that worked. so did I kill it?