a couple weeks ago i got a brand hammer new ATI radeon HD 3870 graphics card unwrapped, in the box, with all the accessories for , which i thought was a good deal.\r\nback on may 4 i bought a tower with an asrock 775xfire-eSATA2 motherboard. i was expecting the card to run in the x16 slot on the board with no problem. because the power supply didn't have a 6 pin lead i bought a 2x molex to 6 pin jumper. the tower won't power up with all the stuff installed. i take the stuff out and install an nvidia 8500gt card and the machine runs great. what is my problem?