Old gaming PC, dusty, may not work (Loughton MK5)

It's about 9 years old, bought when I thought I'd have time to play games (spoilers: I didn't). It's a Coolermaster case, PSU, motherboard, Radeon GPU, intel i5 4690 processor and maybe 16gb RAM. No hard disk. Very dusty and i have no idea if it works. It was up to playomg GTAV at the time.