Found a little trick to improve computer performance (win 7 64 bit)
I was noticing recently that my hard drives were getting used a lot. And free memory was sometimes low. Was looking for a virus and such at first. Or some DOS situation remotely accessing my machine who got thru the firewall. But was coming up totally clean.
Discovered that Microsoft Application Experience was utilizing an AMAZING amount of computer resources (CPU/RAM/Disc access). Went to Task Scheduler and hit "Microsoft", Windows", and "Application Experience" and disabled it. Bingo! Issue resolved instantly.
Check your machine in Resource Manager. In processes accessing disc, you'll see CompatTelRunner.exe running accessing the C drive disc. If so........ go kill it.