Occasionally when a problem occurs you may be prompted to send information about the issue to Microsoft. This helps Microsoft see where problems are occurring for their users, and sometimes suggestions on how to fix the problem are then given. If you never submit your information to Microsoft, this service isn’t needed, but since it’s set to manual by default, you won’t speed up your machine any by disabling it. Black Viper notes the following:

If you choose to disable this service, it may be due to privacy concerns with sending Microsoft your error reports. If so, to help ensure it will not be utilized even if the service is turned back on due to a future Windows Update, do the following:

Note: you must have administrator privileges to perform some of these actions.

With the default Category Control Panel:

1. Head to Start
2. Select Control Panel
3. Select System and Maintenance
4. Under “Problem Reports and Solutions”, Select the Choose how to check for solutions link
5. Select Ask me to check if a problem occurs (Radio button)
6. Then, Select the Advanced settings link
7. Under “For my programs, …”, Select Off (Radio button)
8. Under “For all users and programs, …” Select the Change setting button
9. Under “For all users, turn Windows problem reporting”, Select Off (Radio button)
10. Select the Ok button to apply the settings
11. Select the Continue button (if UAC is active)
12. Select the Ok button
13. Select the Ok button again