Hi, thanks for using JustAnswer.com I am Cris.
Do roll your computer to a previous state you would use "System Restore".
Click on the Windows logo bottom left and in the search box type in Windows Restore.
You will see it appear top of the program list, then click on it.
Follow the wizard by clicking Next. You will see a listed date and time you can also check the box to see more.
Select the desired date and time and follow the wizard until Finished. The PC will restore and restart.
Let me know if you have any further questions. Selecting a positive rating for my assistance is appreciated.
Were you able to perform my instructions?