Hi aayush..
Please try these options one by one and check after each option.
check this link, I hope it helps
First of the all I recommend you to Run the Power Troubleshooter
Start Button<Setting.<Windows Settings>Update and Security><Left Side <Troubleshooter>Click on<Power>Run the <Troubleshooter> Then close
Methods 2: To Create a Customize Power Plan
Start bar <Control Panel>Power Options><Create a Power Plan>
Plan Name......My Power Plan Select High Performance
Sleep Options Turn Off The Display Option......15...(Set the display Time whatever you want) Create
Go to Change Plan Settings<Change Advanced Power Settings> Here you can change All the Power Settings
Hope this helps
Hope it works