Windows 7 just show a black screen, after showing the windows logo on startup.
On Windows startup with the black screen, try pressing caps lock key. If caps lock key respond normally, then there’s a chance that windows boot up properly. Press the power button for 3 seconds and release it.
If windows shutdown properly, turn on the computer again. This time, try pressing F8 to go to safe mode.
In safe mode, open device manager. Open windows explorer, right click on “This Computer” or “My Computer” and select properties, this will open device manager. Or alternatively, go to control panel and select device manager.
In Device Manager, select the Display Adapter, right click on it and click properties. From the properties, uninstall the driver. Don’t worry windows will install its standard or default display driver.
Restart or shutdown the computer, if the problem is just the corrupted display driver then startup should be working fine and the black screen issue is not present anymore.
If the above procedure doesn’t work, there could be some other issue. Or make sure that the computer doesn’t have two screens and the other screen is plug in or available.
Cheers.. till next time.