Wait!!!! I figured out what you're doing Kevin!!!
You're typing ipconfig in as a Run command. That's where you get the flash of the screen. Instead, you need to type it in as a Command prompt like this:
1. Click Start.
2. Click Run.
3. Type cmd or command and press enter.
Then on the black screen, at the C prompt, type in ipconfig.
You can specify with the attributes I left, but you can also access from the Command Prompt with just ipconfig.
I just reproduced your flashing screen- sorry I didn't catch it sooner. T