One day later, we realized we still need GTX 480 instead of the quadro one, so, we re-installed the GTX 480 into the computer. However, the blue screen crash happened again. Then I uninstalled the previous Nvidia driver through (Control Panel\All Control Panel Items)Programs and Features. However, the device manager auto detection told me the driver is still there. Then I downloaded the 480 driver manually, install..... during the installation process, the same blue crash happened again..

How to solve this problem?

Have you tried booting in safe mode, going to Control Panel>Device Manager (sorry if the name isn't exactly this, since my runs in another language) and under graphics cards check if the GTX driver is there, and deactivating it, and then installing the Quatro (or GTX, whichever you want to install now) and activating that?

Have you tried booting in safe mode, going to Control Panel>Device Manager (sorry if the name isn't exactly this, since my runs in another language) and under graphics cards check if the GTX driver is there, and deactivating it, and then installing the Quatro (or GTX, whichever you want to install now) and activating that?

Thanks, but it's too late, I am installing the system

If this keeps happening, you might want to contact NVIDIA's customer support.

I hate BSODs... fortunately, I mostly use MacOSX, so things rarely crash or crap out on me.

Shogun.

Thank you all, I reinstalled the OS and it works!