Try uninstalling any applications you dont need/use because a bogged down hard drive can cause performance issues, but its more likely you installed some not so friendly. Press control+alt+delete to bring up task manager and see how much of your cpu and ram is in used when your not running anything.

Try to stand closer to the target, and close one eye while looking through the site.

Rick is describing a squeaking noise, typically a frayed belt doesn't cause this very common dryer problem. The drum sits on a set of rubber rollers attached to posts located on the back and occasionally the front of the dryer. These rollers (they look like an in-line skate wheel) sometimes need replacing, but more often than not you can just clean them up with a little steel wool and lithium grease.