i have an emachine t3104 and in the device manager my video controller (vga compatible), PCI simple communications controller, and my multimedia audio controller all have a yellor question and exclamation mark next to them and i dont have any of the drivers for them and i tried downloading the drivers off the emachines website and it doesnt work. whenever i open up a program or when i scroll it lags, gessing it has something to do with this. any suggestions?