So I recently upgraded my computer from: Code: Radeon X800 XL 256MB AGP Pentium 4 2.4GHz 2x 512 MB ram some sort of ASRock mobo to: Code: Same gfx card AMD Athlon 3200+ 1x 1 gig ram new ASRock Dual Series "939Dual-SATA2" mobo Windows would not boot under old install, so I installed it to a new location on the HD. However, all is not well. When I try to run a game (namely Oblivion, ZSNES, AoE3, Galactic Civ 2) in fullscreen mode, nothing displays onscreen. Sound will play, and if I hit escape it will move to main title music, but the screen just stays black. If I manage to get the game into windowed mode (either through the pre-game config screen, or in some cases alt+enter), the game will run, and some games even look like fullscreen if I set the resolution to the same as the desktop. I have tried: updating drivers (including CPU, graphic, directx, sound, and AGP), every possible permutation of settings in games, patching games when applicable. I have considered: maybe installing Windows XP 64 bit (I can get it relatively easily), or maybe installing on new partition. Any suggestions? Oh one other anomaly: when I try and play HL2 (or any of the mods), the game will run fullscreen, but if I go into options and turn on either AA or Vsync, the screen will go black as above. But if I force quit the game and go back into it, it works fine and it says the options are still on. Thanks in advance!