Choppy video and choppy games

[thebryceisright]

Hi, I have an HP Pavilion dv7 with changeable graphics cards. I am running windows 7 64 bit with an amd Phenom II N850 triple-core processor. I had the motherboard replaced about a year ago and starting a few months ago, I began having a problem.

Certain streaming video is very choppy (such as Netflix) while the sound remains fine. In addition, any games I play whether I exceed the minimum requirements or not run very poorly. My computer ran fine for the first few years and after I replaced the motherboard.

I have tried updating drivers, switching browsers, and reinstalling Silverlite, but nothing has helped. I would love some advice!

EDIT: I have an AMD M880G with ATI mobility radeon HD 4250 and an ATI Mobility Radeon HD 5470

 

[beret21]

Does that chopping occur on both the graphics card ?
Have u chek the Gpu temperatures ?