When I turn on my laptop, it be on for 30 minutes and then turned off. why?

Answer 1

You need to change the power options under the control panel. To do this:

1. Open the control panel and double click on 'Power Options'

2. In the 'Power Options' window, you will see the options (time interval) to turn off your monitor, hard disc etc. The values you see are the default.

3. Change these to suit your need.

Answer 2

Hi. The computer may have low batteries or a timeout after so many minutes. Look in the BIOS.