SOLVED Upgraded to Windows 10 and can't get past login screen

[DaWizuhrd]

I have a desktop computer that I just built with Windows 7 home premium installed on it. It was working great but yesterday I decided to upgrade to Windows 10. After the upgrade, it brought me to a screen that says welcome back with my username and a space for me to put my password. When I input the correct password, the computer freezes and eventually restarts and brings me to the same screen again. Pressing F2 or Del while it powers on does nothing and so does pressing F8. I cannot restart while holding shift because there is no restart option on the login screen it brings me to. I know that the password in right because if I put in something else it just says password incorrect. Clicking on "I'm not *myusername*"also causes a crash.

My computer easily meets the requirements for the OS and the SSD it installed on still had over 40 gigabytes left on it after downloading the 5 gigabyte file so I don't think it's a hardware or storage problem.

I don't care if I have to restore it to windows 7 or reinstall windows 10, I just want it to work. I have no idea what to do next though and would really appreciate some help.

 

[Trouble]

I think I would boot from the installation media.
Then on the second screen I would choose Repair Your PC.
Then I would take advantage of some of the advanced troubleshooting options and see if the option to Go Back (roll back to your previous OS) was available.
It should be listed among the other options such as System Restore, Command Prompt, System Image Recovery, Startup Repair, UEFI Firmware Settings, Go Back To.......

The installation media can be obtain through either of these two resources.
https://www.microsoft.com/en-us/software-download/techbench
OR
http://www.microsoft.com/en-us/software-download/windows10

Once you have the ISO, you can use ImgBurn to burn it to a DVD or Rufus to burn it to a USB ThumbDrive, either of which you can use to boot your computer.

 

[DaWizuhrd]

I think I would boot from the installation media.
Then on the second screen I would choose Repair Your PC.
Then I would take advantage of some of the advanced troubleshooting options and see if the option to Go Back (roll back to your previous OS) was available.
It should be listed among the other options such as System Restore, Command Prompt, System Image Recovery, Startup Repair, UEFI Firmware Settings, Go Back To.......

The installation media can be obtain through either of these two resources.
https://www.microsoft.com/en-us/software-download/techbench
OR
http://www.microsoft.com/en-us/software-download/windows10

Once you have the ISO, you can use ImgBurn to burn it to a DVD or Rufus to burn it to a USB ThumbDrive, either of which you can use to boot your computer.

Thanks for the suggestion but I was able to crash boot the computer and get to the options you're talking about. I can log in now