display problems, showing split screen

Since installing windows 10 on my old dell, i am having major problems. The Computer is very slow, and is probably too old to properly run the new Windows, but the biggest issue is that after a restart, i am seeing a split screen display with a line through the centre of the screen, and i can find no way to get it back to a single display. After multiple more restarts it has gone back to one screen, but i am now getting two again. In case i am not being clear, here is a photo of what i am seeing. Any help is greatly appreciated!

This happens only in Windows or before (in BIOS)? It could be that your graphics card is failing. You can ask a technician to repair it by heating (reflow or reballing) but it could do it again after some months.

Ah, that would make sense, thanks for the tip. I was assuming it was an issue caused by the windows upgrade and I read about some compatibility issues between older nvidia drivers and windows 10, but the split screen error does occur on the initial boot up before windows actually loads.

it might be the driver for the video card. This problem is happening to me too and someone told me that it should be a driver issue.
look for a driver in you Video Card's manufacturer website.

neil1979 said:

Ah, that would make sense, thanks for the tip. I was assuming it was an issue caused by the windows upgrade and I read about some compatibility issues between older nvidia drivers and windows 10, but the split screen error does occur on the initial boot up before windows actually loads.

If it's in the boot-up as well, before Windows loads, then it cannot be a driver problem. The graphics card is failing. Ask a technician for repairing it.