Graphic turns off on boot up

I'm a bit late to the party but I just wanted to add my experiences. I had the same problem with a client. After a windows update which installed an NVidia driver the screen turned off as soon windows was started up and showing the logon screen.

I used remote desktop to access the machine. This of course requires a second computer in the network. It's probably easy to find or borrow a laptop and hook it up into the network. I've had this already set up as the pc was in a managed domain network.

You could turn on remote desktop in safe mode. Click on start, right-click computer, then properties. In the side menu choose remote settings. In the window that opens choose in the lower part 'Allow connections from computers running any version of Remote Desktop (less secure)'. Remember to turn this off when you're done fixing the problem, this might be a security risk if your computer operates on public networks etc.

To start a remote desktop session:
- Click start, type the command: mstsc and hit enter.
- Fill in the computer name or ip address (use the command ipconfig on the target machine or go to the properties page of the computer to find the computer name)
- Click on connect. After logging on remotely, I've uninstalled all NVidia drivers choosing not to restart. Then I went to windows updates and clicked on optional updates. Richt click all NVidia updates and choose 'hide'. Restart, the old drivers should be loaded and all is fine.

Hope this helps someone!

You can also use System Restore from System Recovery Options to roll back to before a bad driver is installed, then quickly change Windows Updates to manually download and let you choose to install, hide it in Windows Updates when it is offered again. But I would want to try the driver again to make sure that's what is causing the unusual anomaly. Checking the logs may also offer clues: Troubleshooting Steps for Windows 7

in one of my computers it hapens after windows 7 installation. I found that guilty was KVM switch (adapter for one mouse, keyboard and monitor plug in to two computers to use them separately).