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) m 0 l Can't find your answer ? Ask ! Publish Related resources SolvedDiamond Radeon HD 7790 1GB or MSI Radeon R7770 1GB Forum SolvedASUS F2A55-M / Diamond AMD Radeon 7770 HD GHz Edition Forum SolvedIs Diamond AMD Radeon HD 7770 1GB GDDR5 good? Forum SolvedJust switched graphic cards from a Radeon HD6870 to Diamond HD7770, now having significant fps droppage Forum SolvedDiamond AMD RADEON HD 7770 Ghz ed. won't display on monitor Forum SolvedMonitor won't display after doing bios update for Diamond HD7770 Overclocked Edition video card? Forum SolvedIs the Diamond 7870 Worth the price compared to the SAPPHIRE HD 7770? Forum Help with diamond amd radeon™ hd 7770 ghz cant see all ports Forum DIAMOND Radeon HD 7770 GHz Edition 1GB Forum SolvedCan I Crossfire My "Diamond AMD Radeon HD 6970" and a "Sapphire Radeon HD 6970"?? Forum SolvedDIAMOND AMD Radeon HD 7750 450W Video card is compatible to 430W PSU? Forum SolvedWould a Diamond AMD Radeon HD 6670 GDDR3 2gb be compatible with an HP pavilion slimline s5510f? Forum ATI Radeon 7770 "Double Diamond Overclock" Game crashes Forum SolvedDiamond Radeon HD 7970 Mysterious chord? Forum SolvedHow to crossfire a Diamond AMD Radeon™ HD 6770 1G? Forum SolvedDiamond Raedon HD 7970 2 way crossfire Forum SolvedDIAMOND Radeon HD 7790 1GB 256-bit? Forum Diamond USB GC1000 vs AVerMedia Game Capture HD C281 Forum SolvedDiamond HD 6850 running to hot??? Forum SolvedDiamond HD 6570 Crossfire - Is it possible? Forum 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 !