Ok so I just purchased a new graphics card, a gtx 760. My pc works perfectly fine with my old card in it but when I put the new card in and plug in the aux power connector it wont start. Any idea whats going on, I have more than enough power to run it.
How many watts is your PSU running at? It should be able to run on 450 Watts, but the reccomended wattage is 500. if your PSU is much higher than that, then check your GPU is installed properly, and if that does not work, i would replace your PSU.