USB Driver installation ERROR. Help.

I kept wondering why my laptop keep on stumbling on the Blue Screen error saying "BUGCODE_USB_DRIVER". When i realized that when i installed the USB driver it had an error. I installed it again recently it still has an error.

After extracting the files, it tries to install the driver BUT. It says "driver installation failed: could not find MODEM device for this driver." It shows an error.

So, maybe this is why my laptop keeps on experiencing blue screen. So, Why cant i install the driver?. Help me please. Is there another driver installer? How do i solve this problem?

I have the Dell inspiron 1318, running on Windows Vista 32 bit. Help me Please.