Which driver for "ATI Mobility Radeon HD 3650" in a laptop?

Your answer can be found at http://www.driverheaven.net/modtool.php .

OK, I'll explain further. ATi typically does not release updated laptop drivers. The monthly updates are for desktops. So, you have to get your laptop video drivers from your laptop vendor, which updates them less than occasionally.

So, the folks at driver heaven take ATi's latest releases and hack them for laptop users.

In your case you would use the 3000 series drivers. For the record, when they say '3000 series', that means it pretty much covers all the models from 3000 to 3999. Not that they have a 3999 model but you get the point. It's basically like saying 3xxx series.

When you run the install the software might say that your model is not found, but you can select the HAVE DISK option and manually pick from the list using the INF in your ATI driver folder.

Some would say this is not recommended but in my experience, I haven't had any issues yet.

-maj