I have an A1466 model (But I guess this can be relevant to any laptop in general),that has has a keyboard protector imprint or stain remaining on the display, the previous owner has obviously never taken off the KB cover when closing the display. I have tried rubbing it with screen cleaner & ISP but it is still there, Is there any reliable method to remove this that anyone has tried with some success? My guess is that it has left a permanent marking on the anti-glare coatings :( A reason why I never personally used them.

I have purchased a second-hand laptop and found the BIOS is password protected?

Is there a way to reset/remove BIOS password on this particular laptop?

I have tried removing CMOS battery but this has no effect (I believe BIOS password is held in NVRAM on this model).

HP say the only way to remove the BIOS password is to replace the motherboard which I am not willing to do as apart from being able to access the BIOS, the laptop is running fine.