How do you transfer video from iPhone to Dell computer?

Plug your iphone into the computer. A window will pop-up asking what you want to do with the device. Click either 'import pictures' or 'open device to view files'. From there, you can drag photos onto your computer.

If that window does not pop-up, go to your desktop, click on your start menu, open your computer, and you should see the iphone there as a plugged-in device. Click on it and you can drag the photos to the desktop.