What is direct3d acceleration, and why does my com say i dont have it? Tags: PC gaming Direct3D Windows Vista Video Games Last response: October 19, 2012 4:22 PM in Video Games Share Darkithanime October 17, 2012 7:28:49 PM YO! i have a sony Vaio Vgn-NS325J that "had" windows vista 64bit on it. (my com used to be able to play high graphic games like crysis, and devil may cry 4) i upgraded to windows 764bit, and a few days after that i got i got messages saying the Direct3D acceleration wasn't working (or was turned off) (now i can only play old games like diablo and starcraft) i tried updating the drivers... that didnt work i tried updating directx... that also didnt work when i check the Dxdiag at first it says that the Direct3D acceleration is off, but when i run the 64bit Dxdiag it says its turned on More about : direct3d acceleration dont Brett928S2 October 17, 2012 8:49:19 PM Hi Did you FORMAT the hard drive when installing 64 bit ? If so YOU DID get the chipset and graphics drivers from Sony support site ? All the best Brett Darkithanime October 19, 2012 2:12:51 PM i did not format the drive at the time... was i supposed to O.o? and one other thing (i dont think ive ever got a straight answer for this) can you only use windows installer cds only once, or can you use it multiple times because you own it? Can't find your answer ? Ask ! Get the answer bystander October 19, 2012 4:22:56 PM You can use it multiple times, but you can only have an activated copy on one system at a time, unless you purchase a 2nd license. Can't find your answer ? Ask ! Publish Related resources : ForumCan't enable Direct3D acceleration . ForumHow do make direct3d available ForumProblem with Halo and Direct3d ForumAGP Texture Acceleration : disable in DXDIAG ForumMy PC wont enable Direct3d ????? ForumFX5600 reboots during Direct3d Tests ForumTi4400 won't run Direct3D full screen ForumTriple Buffering for Direct3D ? ForumSay what you want -- ATi -- Rules Forumcompatible direct3d devices? Forumdirect3d not available on quadrofx500 ( screenshot ) ForumNew Radeon 9600 Pro - No Direct3D support? ForumWhat Direct3D 10 Is All About ForumCatalyst cp or ccc stops hardware acceleration ForumWhat the pros are doing... ForumDirect3d device driver does not accurately report texture .. ForumUnable to use gpu acceleration in xilisoft video converter ForumPS3, and Wii adding to wired network. ForumWhat games would I be able to run? Forum[Solved] What hard drive can I use to upgrade my PS3 slim? More resources Read discussions in other Video Games categories Console Gaming PC Gaming Handheld Gaming Nintendo Playstation Servers Sims World of Warcraft Xbox 360 !