I recently purchased XFX HD-583X-ZAFC Radeon HD 5830 Video Card - 1GB, GDDR5. I have a Dell inspirion 530. I added a 600 watt OCZ psu. When i install the card the computer turns on, fans are running, but I get no video, and my keyboard doesn't light up. Any tips? Does this card require a bigger PSU (more than 600). The only other power being used is to my main board, CD ROM, and Hard Drive. Also if it matters I have windows 7.