Hi Rahul,

Please follow the below steps to resolve the BSOD issue.

1. Uninstall any recently new programs in your system and then check if the issue persists. Did you just install a new program or a piece of hardware, update a driver, install a Windows update, etc.? If so, there's a very good chance that the change you made caused the BSOD. Undo the change you made and test again for the STOP Error. 
To undo use below steps as System Restore.

Step 1: Open System Restore.

Step 2: Revert to a previous state — Click “Next,” and select your desired restore point from the list of options. If you want to see all of the available restore points, click the box at the bottom labeled “Show more restore points.” Once you pick a point to restore to, click “Next,” and then click the “Finish” button to begin the process.

Step 3: Manually create a restore point (optional) — To manually create a restore point, press the Windows key (or click the Start button), type “Create a restore point,” and click the option of the same name. Click “Create” at the bottom of the System Protection tab in the new “System Properties” window that pops up, and enter a description for your restore point. Then, click “Create” to begin.

Fix 2: netwns64.sys causes bsod errors which it's one of the intel wireless adapter driver. Please, remove the current intel wireless drivers, update it from Lenovo support site first, if it doesn't work, uninstall the current drivers, restart your computer and update it directly from intel.com

Fix 3: Check you have enough space left in your C drive. It should have more than 2 GB space to work properly.

I hope this helps.

Regards,
Lokesh