I have two problems

[mgmustafa]

Okey first of all my main language is Turkish thats why I have some mistakes  Okey now my first problem is when I open my computer and click ctrl +alt+s my product name is Omen by HP Laptop 15-dh0xxx but when I check behind the computer is dh0006nt I wanna fix this problem and in my keyboard d letter is broke I can use but something is wrong I need new d letter please 

[banhien]

@mgmustafa 

No, you don't have to fix that. Your computer is an HP 15-dh0006nt which is a member of the HP 15-dh0xxx machines.

HP does NOT sell EACH key of keyboards. You have to buy the whole new keyboard (including the top cover).

Regards.

[BeemerBiker]

Oops, sorry 

@banhien is correct.  I forgot to mention that it is also possible the damage is to the base and the replacement key may not be attachable.

The 0006 and the 0xxx is a way that HP avoids having to put the exact name of the laptop into Windows. I never cared for the numbering scheme.  Its like the government putting xxxxxxxxx on all paper currency because it is too much trouble to number the $ bills with a unique number.

Anyway, you can probably replace the key or the entire keyboard. 

The Omen 15-DH series can be red led on black keyboard like these

https://laptopkey.com/hp-omen-15-dh-red-backlit-laptop-keyboard-key-replacement/

and AliExpress also have them but they do not explain as well as the above URL which has a video

https://www.aliexpress.us/item/3256804209079199.html