Windows 7 freeze after restart

Hi!
I have a strange(not common) problem..
I installed a few days ago the new nvidia driver 260.89.I did a clean isntall.When it prompted to restart it didn't restart my pc.I had to use the reset button.After that I could'nt restart my windows it simply said shutting down, and after that black screen(no video signal), and nothing happened.I tried to reinstall an older driver but the same problem, the driver installed correctly but the restart didn't work.In safe mode same problem.I managed to resolve by disabling the VGA card from the device manager and enabling after restart.But today the problem came back, and now it isn't working with the disable of the VGA card.
Can someone help me pls, because I cannot restart my PC from windows, only with the reset button.The shut down is working perfectly, only the restart doesn't.
Thank you!

I have the install DVD but isn't original .
I tried startup repair with F8 it found an error:unexpected sistem configuration change or something like that but it couldn't fix the problem

I tried, but there is no restore point (I did a clean install in about a month ago)

Not realy, but I hoped that I don't need to reinstall the op. system :)
But let's say I reinstall, what if the problem will appear again?

I don't understand, boot from what?
My windows is working, I have problem only with the restart.
By replacing the driver you mean format the Windows 7 partition and reinstall it?
Thank you!