Alright guy's. The other day my uncle gave me a build. LGA 775 mobo, e8600, 2gb ram, no video card on board hd ram 450 watt psu. He couldn't figure it out anymore and why it wouldn't turn on. So knowing me I figured ehh what the hell its easy ill take it, but I guess im a idiot afteall.
. So im trying to figure out why its not even turning on I belive its the mobo but I figured I mine as well ask the experts. I plugged in the PSU to the board the 4 pin to the CPU and everything else was unplugged. Tried turning the board on nothing. It is getting a indication light saying there is power to the board, now I cant figure out how to turn it on without the case there isn't a button on the mobo actually istelf.
Next I tried unplugging the ramm thinking it was a memory issue. Nothing. Tried a different PSU a bigger 750 watt. Nothing. Last trick I tried was I took apart of a sitting around CoolerMaster 932 the top and plugged that in for the power switch thinking maybe something had gone wrong with the case plugs. STIll nothing, now its nothing urgent just wanna repair this bad boy and sell it because its no use to me. Any idea's? Much appreciated help guys
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The mobo speaker did tear off which could be the reasoning. Is it?

Next I tried unplugging the ramm thinking it was a memory issue. Nothing. Tried a different PSU a bigger 750 watt. Nothing. Last trick I tried was I took apart of a sitting around CoolerMaster 932 the top and plugged that in for the power switch thinking maybe something had gone wrong with the case plugs. STIll nothing, now its nothing urgent just wanna repair this bad boy and sell it because its no use to me. Any idea's? Much appreciated help guys

The mobo speaker did tear off which could be the reasoning. Is it?