[4820TG] Getting graphical errors in game(s), where to troubleshoot?

Hey all!

I've started getting this tearing/artifacts/errors in a game called Allods.

Thing is, this is pretty much the only game I play, so I cannot tell if the errors is allods-specific or if it is a hardware-error.

My question is, how do you think I should continue troubleshooting this?

Its an Acer 4820TG laptop, equipped with switchable graphics.

The graphicscard I play on is an ATI Mobility Radeon HD5650.

The drivers are from late 2011, and the last ones Acer will release. AMDs own drivers won't work with the switchable graphics :S

Screens of the errors:

http://s19.postimage.org/qse6n8l75/Allods_120712_025449.jpg
http://s19.postimage.org/u0io0a7gx/Allods_120712_091725.jpg
http://s19.postimage.org/smr14z87l/Allods_120712_093852.jpg
http://s19.postimage.org/c09gvwf9t/Allods_120712_171355.jpg

I've restored to the laptop to factory settings, and then doing a clean install of latest drivers and allods. These screenshots are from today, a day after this cleaning.

I have some days of warranty left, if I think its a hardware error, I can send the computer in to Acer. But .. I would be without computer for some weeks then ^^

So, I'm trying to figure out what's going on here.

I've tried with both disabled and enabled Catalyst AI, with the same results.

Where would you look further, to pinpoint the error?

Thanks in advance!
Mattedatten