Default Windows 7 Install: What to change to make it faster?
Solution 1:
By and large the rule of thumb for Windows 7 is: Don't Overtweak Anything. Seriously. Just leave the services on and don't try to turn off things you don't think you need. Microsoft Engineers have spent more time thinking about optimizing the system than you have, and the best you'll ever be able to do is save a few megabytes of memory at the cost of hard to diagnose technical issues down the road when you've forgotten what you turned off and why.
The system is quite good enough as it is; it's not 1998 any more.
Solution 2:
Blackviper has a lots of good information on service configurations here.
Solution 3:
I'm sure if you look hard enough you can always find services and features you can disable simply because you don't use them. However unless you really know what you are doing, you really shouldn't try. Especially on Windows 7. Its loads faster than any previous Windows OS and is already tweaked to perform very well on any relatively modern machine (even netbooks!).