In many cases you may want to change sleep mode of your windows 7 running pc or laptop i.e. Automatic system failure or BSOD (Blue screen of death). To change the sleep mode in Windows 7 follow below steps.
Step 1. Open Control Panel from windows 7 start icon
Step 2. Go to search bar and type “power” or jump directly to Power Options
Step 3. Go to edit power plan and set the time to turn off display and sleep of your computer.
Step 4. To disable sleep mode select never from put the computer to sleep drop down options.