Annoying Hammer Issue

I recently got a used gaming laptop and have been pretty happy with being able to play games while staying portable. Problem is, Hammer’s been giving me grief. It seems that while trying to select something in the 3D view, it always goes right through the object I attempt to select and instead selects the last object before blackness. For example, if I have two brushes right next to each other, and I try to select one at an angle that has the other behind it, it will select the one behind it. I fear that it is a graphics driver issue, with all I’ve heard about AMD cards. (I can adapt to the scrambled text issue, but broken 3D selection is unbearable.) Can anybody lend a hand?

EDIT: Just emailed Mike Durand about the issue, awaiting response. Update: I didn’t get a response.

EDIT 2: I have a feeling this screenshot will better explain the issue:

Specs:
Asus G73Jh Laptop
Windows 7 Pro 64-bit
Intel Core i7 Q720 @ 1.60GHz
ATI Mobility Radeon HD 5870
16GB DDR3 RAM

When you click on the first brush, does it cycle through selecting each brush in order? Or does it immediately select the last brush? The former could easily be a glitch with hammer or something as simple as a sticky mouse button.

Unfortunately, it’s the latter.

Founded in 2004, Leakfree.org became one of the first online communities dedicated to Valve’s Source engine development. It is more famously known for the formation of Black Mesa: Source under the 'Leakfree Modification Team' handle in September 2004.