Hello,
My video card (FX 5200) broke a couple of weeks ago. Since then, i plugged my monitor into the integrated chipset, and a strange little noise started to come out from the motherboard. Today i bought a new card (7300 GT), i installed it, but the noise from the motherboard keeps coming and everything is really laggy, especially videos. For example, with the last card i could watch 480p videos perfectly, but now i can't even do that. I have 1 GB ram and 2.13 GHz CPU.
Please check whether the problem is not soucing from the CPU fan and also please confirm whether you have installed its right compatible driver for it to work properly.