my MacBook Pro screen has gone dark but is working on alternate display

geetika1013 wrote:

the MacBook screen has gone blank.

I want to check the status of hardware

Well this rules out GPU on the logic board—but does implicate the Display Assembly issue.

In or out of warranty you can get a free over the counter 'Apple Service Diagnostics' test /assessment

Make an appointment for a "hardware issue"—

https://www.apple.com/retail/geniusbar/

Outside the USA

https://locate.apple.com/country

Check your coverage

https://support.apple.com/my-support

Learn how to get your Mac fixed and how much it will cost. https://support.apple.com/mac/repair/service

Get your Mac ready for service - Apple Support https://support.apple.com/en-us/HT209095

Hi,

Try to run Apple Diagnostics if it reports display or graphic processor error(VFD001 to VFD007).

Use Apple Diagnostics to test your Mac - Apple Support