|A couple of things:|
- when you say "turn on the computer from sleep", do you mean Standby or Hibernation mode? Those features are designed for laptops, not desktops. You'd be better off disabling both modes & reconfiguring your screen saver & power scheme settings.
- why are you running the RAM in single channel mode?
- the GeForce 7100 is not a video card, it's an integrated graphics processor (IGP) that's built into the motherboard. IGPs are NOT good for gaming. Did you check the system requirements for Blur? The 7100 is not on the supported list. If you want to play games & play them well, I suggest you install an actual video card. With all the sales coming up, you should be able to find a relatively good gaming card for $50 or less. Just about anything will be better than the 7100.
Try this & see what you come up with: