Hi Prakhar,
I was hoping you could help me out as well.
I have had this issue for the last three months, the laptop monitor is blank but works normally on an external monitor. If I need it to work on the laptop, I must disable Intel's display driver. Laptop then runs on Microsoft Basic Display adapter.
I have reinstalled OS, tried several times to download the correct Intel driver, but nothing seems to get it working normally.
Best,
Surabhi