Since last week I'm having a difficult time to start my pc since power button on front seems to have got loose not sure how to repair this or is it even repairable ?
Remove the side panel, check the cables for the power switch (check the pic below). Unplug it, cut the cables from the switch terminals and simply short them when you need to switch on your PC.
Or get a simple bell switch as someone said, connect it and ring the bell to start it!
It really works wonderfully just be warned that Anchor bell did not work properly, sometimes it switched off the PC within some secs after tuning it on creating a surge error in my BIOS. Now using Schneider door bells for both my systems never failed till now, me so happy