Hp pavilion dv9000 cd player quit working

may be your moterboard fault.

It Seems your DVD Drive is read only, Its not R/W.
Please check the front of DVD Panel. If R/W is written it should work?

Please post your feedback and Vote if the problem resolved as per your satisfaction>

you need to state what operating system you use.

but if cd-rom is burning cd's and not dvd's this is usually problem with software, you need to state what software you are using to burn dvd's as well, seem like you do not choose correct driver in your burn software settings.

take your cd and re-install the drivers

Laptop batteries will usually last from 1.5 to 5 hours, depending upon the demand, the battery and the use. Sound burns up a lot of juice as does the DVD player so if you're watching movies or playing games an hour is about right. You can purchase a better HP PAVILION DV9000 Battery with 12 cell , it will work longger.
detail: http://www.battery-center.net/hp-pavilion-dv9000-battery.html

you may find the hinges parts from eBay which is cheaper price:
http://shop.ebay.ca/?_from=R40&_trksid=m38&_nkw=HP+Pavilion+DV9000+hinges&_sacat=See-All-Categories
how to replace your laptop hinges:
1) take out the screws at back of laptop under the hinges base
2) or take out the screw at side of laptop near the hinges base (if you find any screw there)
3) there are two cables connect between LCD lid and laptop base
you do not need disconnect those canbles. just careful them
4) take out all scews on the front of lid cover( the scews is covered by thin plastic cover), then take away front lid cover.
5) take out the screws at beside hinge base and side of LCD panel(2-4 scews at one side), you need check the back of lid cover can separate to LCD panel a little., be care replace only one at one time .
6) put back all screws step by step.
hope help you fix it, please take a rating let me know how much you are helped, thanks! any question please let me know!

tried to reinstall/update your audio drivers and tixed your sound equlizer.

This is probably the closest model to your HPdv9000, click on the link and read on! http://www.insidemylaptop.com/remove-keyboard-replace-memory-hp-compaq-nc6400/

Good luck and have fun!

Go start run then type DXDIAG and let me know for system models and i will find right driver for you!