Yes, repair the CPU fan 1st. If you can start the computer and it works fine for 5min (like you said above), then so far you are lucky and the CPU hasn't been damaged. But I would stop using it until the fan is repaired. Just get something that works, no need for some big thing that can cool the Sun.
Try a PSU if you wish, but if you have been running ok with the watts you are using I wouldn't worry about that right now (that is if you haven't added anything to take more watts).
OK ..... i just unhooked the whole dam PC !!
Now setting up one my friend gave me ( a freaken Systemax ) AOL optimized ??
Just put my Norton on it ( 84 days left ) and changed it over 2 Microsoft !!!
And it has XP home on it ......... now i go download my speakers .
Better get more point's Meeester .......... i'll be coming 4 ya !!!! Hahahahaha
PS ...... Tomorrow i'll see if i can just put my hard drive in it , think that would work ??
I got 2 many pain pills in me now 2 try something like that