Windows 7: Major problem with Windows 7-Black screen

Hi,

I wanted to upgrade from Vista to 7, but I didn't want all of my programs to save. I bought an external HDD, and put all of my games and programs which I didn't want to get lost into the HDD. Then, I reinstalled Vista, so I had no data on my PC, but only on my external HDD.

After that, I installed Windows 7. Everything went well, until I had to boot my PC. It said it was loading windows (7), and than the screen turned black, and I haven't seen nothing exept of the mouse curser.

What could the problem be and how could I fix it?
Thanks.

Oh another thing:
I think the internet drivers are lost too. How can I reinstall them to have my web working?

Try this. Try to Boot up from the DVD, and do a clean install. Hopefully, you will get back everything that you lost. This time, disconnect everything but the mouse, monitor and keyboard.You can also try from safe mode and see what happens.

I am now trying to boot through safe mode. It sayes :"Setup is prepering your computer for first use". I'll wait a bit and tell you what happens.

btw, I don't need all that I lost (that's why I wanted to lose it from the beggining).. Those are some programs and files that I dont use and don't need, and the Mobo drivers, monitor drivers and VGA's drivers I can install from the original disk which I still have.