My brother's psu fan broke (don't ask me how).
He was already running the pc without a side-panel because the case is crappy (It was originally fan-less). And he doesn't care how the tower looks, as long as his games run.
In fact he told me he heard a very loud noise inside the tower... but then the noise stopped (sure the fan got jammed) and the pc continued running so he continued gaming...
PSU with broken fan, before I opened it:
PSU after I opened it and took out the remnants of the fan:
Broke up the fan with a heavy duty wire clipper to get it out (not worth the trouble to get it out intact since it's already broken!) Note new fan already in position under the grille:
PSU nice and fanless....
Fixed a spare 60mm fan I had on a shelf, on the inside of the grille of the PSU... Connected it to motherboard, thanks to Kevinheraiz's suggestion
I had to work with tie-clips. The screws wouldn't fit in the grill and PSU body without going through the plastic body of the fan. Here's the PSU with its new fan, fully assembled and ready to be put in pc:
Everything in place now, and some quick wire-management since the pc looked more like Cthulhu than anything else......
And the ultimate ghetto way to run a pc cool without a side-panel, but with a "side-panel" at the same time: All the fresh air goes in, but it's protected against accidental kicking and pets also keep out
System specs are a 5000BE, 2GB RAM and 8800GT 512MB on a 1280x1024 monitor.
He's due for an entirely new system very soon.