Diamond 7770 hd Tags: Graphics Cards Diamond HD Graphics Last response: October 14, 2012 10:11 PM in Graphics & Displays Share arthurshpi October 14, 2012 9:16:45 PM He I just bought the Double black Diamond 7770 hd, but when I turn on my PC, the screen is black. My specs: Gateway DX4822-03c: Intel Core 2 Quad Q8400(2.66GHz) 64 bit Quad-Core Processor 8GB DDR2 800 300W power supply More about : diamond 7770 AstroTC a b U Graphics card October 14, 2012 10:11:35 PM The 7770 HD requires a 6 Pin PCI-E connect which I doubt your 300W PSU has. The Card Requires- Power Supply : 450W (or greater) power supply with one 75W 6-pin PCI Express power connector. Certified power supplies are recommended. Lucky for you, your case will accommodate a new Power Supply (I would recommend Antec, Corsair or Seasonsic) Can't find your answer ? Ask ! Publish Related resources: ForumIs the Diamond 7870 Worth the price compared to the SAPPHIRE HD 7770 ? ForumATI Radeon 7770 "Double Diamond Overclock" Game crashes ForumHelp with diamond amd radeon™ hd 7770 ghz cant see all ports ForumDIAMOND Radeon HD 7770 GHz Edition 1GB ForumGTX 650 or HD 7750 or 7770 ForumRadeon HD 7770 Vs. GTX 650 ForumA8-5500 + amd HD 7770 ForumNeed help with AMD Radeon HD 7770 Setup ForumBrand quality for HD7770 ForumTroubles with crossfire AMD HD 7770 ForumDiamon AMD Radeon HD 7770 ForumRadeon HD 7770 GHz Edition ForumProblems with AMD Radeon HD 7770 ForumWhich 7770 ? ForumAMD 7770 PSU ForumNeed a card By lt_dan_zsu, 4 hours ago: It looks like the 7850 is a little higher, but it's nothing... Forum7770 at 1ghz or 6850 at 775mhz? ForumAMD 7770 GPU usage goes to 99% while gaming and crashes Forum7770 3 choices Forum[Solved] GTX650 TI vs 7770 OC Ed. More resources Read discussions in other Graphics & Displays categories Ati GPUs Graphics Cards Gtx HD Monitors SLI Crossfire Tuner Cards Radeon Video Diamond Multimedia Matrox Nvidia Palit PowerColor Asus Games !