Windows 7: Cd/dvd rom not show in device manager or in computer

Hello all.....
Ty for any help with promble even before i get started ty ty......
I have a hp pavillon dv-9000 running win 7 pro.......this laptop when give to me was in bad shape.... At one point i had the cd/dvd rom drive working yet in the middle of loading windows files it stoped working.... Knwoing the bios has only the driver for win vista i thought the driver for cd/dvd might not work.. So i droped win 7 on a usb flash drive..... The os is up n running.... So far no real troubles.. Ive had to jump around to find drivers for this... Hp lazy over paid plp.... Any ways i still dont have a cd/dvd driver nor any place in the device manager to even update the driver.... Any ideas????? Gren ligh on cd/dvdrom door..... Oh and i have a replacement cd/dvdrom drive. That when i install i no longer have a green light on door it is red..... Funny thing is it dont show in my computer or device manager yet in the bois it is enable.. Yet dont read in boot list? Humm wait now my head forgot if it reads in boot list or not... Ill check it again to make sure im right... So thinking this over.... Im thinking i might have a m/b problem in this case it very well could junk.. Ty agin for any help with this......

After checking Hp's website for drivers, I find that particular laptop only supports Windows Vista, XP and 2000. So that may be the problem right there.

You have a couple of options here, one is use the drivers for Vista - bit specific and install in compatibility mode. Another option is to find the product specs page for the make and model laptop and find what make cd/dvd drive they used and go directly to that manufacturers website for the driver.