I finished my first ever build about a couple of weeks ago and was so happy to turn it on. Pressed the power button only to find out there's nothing showing on the monitor. So I powered the system on with the chassis open, I noticed 2 red lights on the back of my gpu and 1 red light next to the cpu where it says 'CPU LED'. At first I had a really cheap cit 500u psu, now I have a corsair cx500 and it's still not showing nothing on the monitor when I power on. The system turns on with every fan apart from the gpu's running. Has anyone got any suggestions what I could do? My next action was to change my GPU but before I do that, is there something I haven't done?
CPU: Intel Pentium G860
GPU: Radeon HD 4850
Motherboard: Asus p8p67 PR0 REV 3.0
HDD: Western Digital WD Blue Caviar 500GB
PSU: Corsair CX500