So anyway, today I got myself a new graphics card, (HD radeon 4650) and a new power Source. (some kind of 550 watt thing) And had them installed. I turned it on and it was alright, untill I played TF2 and recieved a ping of 900. How the forget did this happen? I can't begin to fathom how a graphics card or a power source could do this. Can I fix this? If so, how?