Clean booting is a process which will disable non-windows services and start-up programs that may not be needed. If you clean boot your computer, you will usually have a reduced boot time and less load on the CPU. If needed, they can be turned on but i highly recommend clean booting once every two months to filter out all unwanted services and start-up programs.
You can re-enable them later, or when needed. This process normally does not interrupts with the running of windows operations. However, if after clean booting you miss a start-up program from loading, you can go back into the configuration following the steps below and put a check on the service (that you want enabled).
In order to clean boot your computer; simply follow the steps below.
Clean Boot a Windows Vista / 7 Computer
To Clean Boot your Computer Hold the Windows Key and Press R on your keyboard to open Run Dialog.
In the Run Dialog type msconfig and click on the Services Tab and place a check on Hide All Microsoft Services then click on Disable All
Click Start Up Tab and click Disable All. Click Apply and Restart.
That’s it! After the restart, you will see significant improvement in the speed of your system. If you wish to enable a service or a start-up program, re-open the msconfig utility and come back to the start-up tab or the services tab (which ever needs enabling) and put a check on the program you wish to enable, make sure you don’t enable start-up programs, you don’t want.