But how do you determine which services are needed?

The following is a step-by-step on how to determine what services are required. If you follow these procedures, you will definitely improve your computer's performance! But what happens if you happen to run into trouble? You can use the LAST KNOWN GOOD startup option if you can't boot into the operating system, and you can use the System Restore function to get back to where you were before making the changes [make sure to leave the System Restore Service on Automatic otherwise you will not be able to use the System Restore function]. Give it a try!

1. Click Start.
2. Right-Click on My Computer.
3. Click on Manage.
4. Expand the "Computer Management" window to full screen (it helps later on).
5. Click on the [+] by Services and Applications in the left-hand frame.
6. Click on Services.
7. Look at the Startup Type column.
8. Right click on any service that is shown as Automatic, and select Properties from the pop-up menu. From the Startup type drop-down menu, select Manual. Click the OK button. Important!: Leave the Windows Audio service in "Automatic". Note: You will not be able to change the Remote Procedure Call (RPC) service. It must be "Automatic".
9. Repeat step 8 until all "Automatic" services are changed to "Manual".
10. Close the "Computer Management" window.
11. Restart your computer.
12. Log on as Administrator. Note: This might take a little longer than usual, due to having no "Automatic" services.
13. Before you do anything, perform the following steps.
14. Click Start.
15. Right-Click on My Computer.
16. Click on Manage.
17. Expand the "Computer Management" window to full screen (it helps later on).
18. Click on the [+] by Services and Applications in the left-hand frame.
19. Click on Services.
20. Look at the Status column.
21. Right click on any service which is shown as Started and select Properties from the pop-up menu. From the Startup type drop-down menu select Automatic. Click the OK button.
22. Repeat step 21 until all "Started" services are changed to "Automatic".
23. Important! Check to ensure your Anti-Virus service (such as Norton AntiVirus Auto-Protect Service) is set to "Automatic".
24. Close the "Computer Management" window.
25. Restart your computer.
26. Log on

Your performance should be faster now! If you find something does not work, examine your services, and change the appropriate one(s) from "Manual" to "Automatic," then restart Windows.