Bom dia Seven.
let's go by parts:
1) I would recommend you test your memory for any problem. Memtest86
is what most people use. You should run it for many passes, if possible overnight.
2) Your computer is apparently new, so it is strange you can't find the drivers for those components. What is the model of your laptop? Acer should also have drivers available. If you can find out more details about them we might be able to direct you to the right places. For system information SIW
is a great program. By the way, usually Vista drivers work well in windows 7.
3) Finally, I don't think you need the USB camera driver unless you are using one. The other 2 might turn out necessary, mainly the mass storage driver.
NVidia does a great job detecting your components and finding appropriate drivers, I recommend you go to their website and do that. Adn they do have windows 7 driver for your card: NVIDIA DRIVERS 196.21 WHQL
Saudações. E como você disse na outra thread, este site é muito bacana!