How to increase Computer boot up time:
Some computer open with less than 20 minutes but generally its estimate time is 30 seconds.
Step1: Decrease start up program.
When computer start then install program running for this reason computer boot up time increase.
Step2: Start ---- > Run.
Step3: Msconfig---------------Press Enter.
Step3: Will open system configuration Utility. Click on the service/start up. Which program little important this program unmark and press OK.