I found a PC case the other day near the dumpster in the alley. I saw that the motherboard and PSU were still present and I decided to take it home.
Once I had the time to crack it open I found these components inside the case:
Motherboard: Gigabyte GA-P55-UD3R (LGA1156)
RAM: 4GB (2x2GB) G. Skill RipJaws DDR3 2000
PSU: Raidmax XT 500
There was no CPU but there were no bent pins either so I decided to spring for a low budget CPU just to see if the board was still good. I found the Intel i3-540 on eBay for $3.83!!!
I had a spare SSD lying around as well as an RX 460 from Gigabyte that I use to swap as known good parts when I'm troubleshooting a PC.
I took everything apart and gave each component a good cleaning before putting it all back together.
At first the system wouldn't boot. I found that the upper PCI-E slot is no good. I can't get a signal when I use that slot but everything boots fine if I use the lower slot. This must have been the reason the previous owner got rid of it.
I installed windows and ran a stress test on the system for about 3 hours using Intel XTU and I had no issues.
Aside from the PCI-E Slot issue and missing I/O Shield and Expansion Slot Covers, the system runs pretty well. Now I just need to figure out where I'm going to put it and what I'm going to use it for.
PS - Does anyone know what the make and model is for the PC Case? I couldn't find any manufacturer logos or part numbers anywhere on the case.
UPDATE I found the case. It is by Raidmax and the model is ATXA21WB. Thanks to those that suggested that Manufacturer.