BU40N doesn't read any Blu-Rays but DVDs work fine

[123321mario]

I'm pretty lost, I don't really know where to ask, sorry if this topic is misplaced.
Hello, I recently got a BU40N and flashed MK 1.03 on it, it worked fine for maybe 2 weeks then just stopped reading any blu-ray discs. DVD still work perfectly fine.
It's directly wired in SATA in the PC, no USB adapters. Can anyone help me?

[Woodstock]

Not reading ANY BD disk usually means the BD laser is not functioning. The red laser used for DVDs is functioning well, but the mostly-blue BD laser isn't.

My suggestion would be to replace the drive.