PC problems

For some reason my PC has decided to die on me. The power comes on but there is no beep and the hardrives, motherboard don't start. The external hardrive, mouse etc all get power but the moniter doesn't. If anyone has any ideas I could do with the help.

Day 16 - Post a kigurumi cosplay of your favorite anime character

I have no idea what this is so I'm just going to do a search and hope for the best. Well the search brought back nothing so I'm going to leave it at that.