IPSKL-SC Aurora R5 Alienware motherboard with I7-6700

Comes from my old Alienware desktop, I stopped using it for a year since I got a new pc, doing some cleaning and just taking up space, the computer did NOT turn on, I tried differnt psu's, there was a button on the case that made the fans spin but it was as far as I got, case was huge and figured it could have also been the case that might of stopped working, might have accidently pulled a wire when taking things apart once and could not figure out what's wrong anymore, I don't know if it could be the psu or cpu that's the problem or neither or both. I couldn't figure out how to manually turn on the pc by connecting the power pins since alienware mobo was a bit diff then what im used to. I cut the cables on the wifi/Bluetooth adapter since I was in a rush to remove the case and didn't want to damage the actual card, I don't usually sell things I'm not sure if they work or not so I'm just letting know whoever is interested whats wrong with it, $60 obo

Condition

Other (see description)