Do these horizontal lines on MacBook screen signify logic board or graphics card failure?
MacBook support USB target disk mode so you should still be able to boot and back up the data from the storage and/or pay for just labor when it goes in for hardware repair.

It might be hard to see what’s up, but most times this is GPU / cabling when you have those glitches - it’s less likely just the screen based on the image.

You might even be able to connect the Time Machine drive or navigate carefully and set up Time Machine and let it run overnight to get a backup still. That will also let you know the GPU / graphics is the only failure and not the core processing and storage.



Since the MacBook has a unified storage / logic board / GPU - it won’t matter so much what fault is as 95% of the repairs will be to swap out that assembly entirely and send that part back to get refurbished in the factory. A mail in repair for this would be covered under AppleCare or warranty in all likelyhood and if you paid for an official repair, expect less than $350 for parts and labor and shipping and testing in the US.