I'm sorry about the issue. Is there any issue using windows 10?
Please try the following to get back to windows 7:
- Click on Start (which is the windows logo icon at the lower left corner of the computer's screen), then click on Settings, then click on Update & security, then click on Recovery option on the left, then there, select the option to go back to your windows 7 there.
Please reply at the box below to continue troubleshooting. Thank you.