Optiarc DVD RW AD-7561A This device cannot start. (Code 10)

I beleive that this code is being displayed under the Device Status in the Properties window of the DVD Drive in Device Manager.
If it is so, you need to do some modifications with the Registry to resolve the issue and I am sure that the issue will be resolved with this.
However, since you had not specified the Operating System which is installed in the Notebook is Vista or XP.
However, I am providing the links which includes the steps for both Vista and XP to edit the registry to resolve the issue with Error Code 10 with the DVD Drive in your Notebook.
Removing Upper and Lower Filter in XP :
http://support.microsoft.com/kb/314060

You need to perform the steps listed under Advanced Troubleshooting to delete the Upper and Lower filters.

Removing Upper and Lower Filter in Vista :
http://support.microsoft.com/kb/929461/en-us
You need to perform the steps listed under Resolution in the link above.
You may not find both the Upper and Lower filters according to the instructions links provided above.
Delete the ones among the Upper filter or Lower filter or both which you find in the locations mentioned.
This should solve the issue...

Hi Friends,
HP Pavilion DV6000 Notebook main problem's are Power Problem, Vista Error etc..
For these problems you can visit a link by just Click Here .
For any other problems with this Notebook you can Click Here

Incredible, works like a charm

Spot on fix.

Drive now worling again.

Many thanks.