Firstly let me say I appreciate the reply.
Pi is the latest version, I made sure, a 3B +, it's housed in a megapi case..which the guy told me can only work with a standard little fan that he fitted. The case has a reset switch, which is now not working, and something was mentioned about a shutdown mod that's tied to the little on off switch. Again apologies for saying this stuff poorly. I do have a previous history of tinkering, I used to build computers etc, just lately ive not got my hands dirty, and I know nothing about these things. I basically just wanted a mini box to play emulators in a cute case, but what arrived had a horrid fan, the frontend wasnt too friendly, and now it stopped working. I can stick some photos on later too if that helps.