Been trying to figure this one out for a long while now. Didn't find anything on bit-tech, and only found one other forum where someone had ask about this: Everytime I want to run an older game on my PC, I need to run it once, wait for about 5 seconds then run it again. The first time doesn't fail, or through an error - it just doesn't open. If I open Task Manager, I can see it working but nothing else. Now when I say old games, I mean Oblivion does it (through vanilla launcher, mod manager, or OBSE), but fallout 3 is fine, or any newer game (Fallout NV, C&C 3, Dead Space 1) my specs are: Windows & 64-bit(ultimate) I7 - 950 Corsair Dominator 6GB Geforce GTS 250 1GB Has anyone heard anything like this, or know of a cause? At least the games are older, so strain on the system is not soooo bad (yes, the first run consumes similar resources to the second run of the game) My HDDs are not failing, have defragged, uninstalled, reinstalled the games, graphics drivers, etc. Basically - already done all the standard 'go to' changes/fixes Thanks to all for any help!