I think the login screen program has been corrupted because I can use the magnifier app by pressing the circle button and clicking on magnifier. I can change settings and restart and they will save....

CPU: amd fx-8350
GPU: amd r9 280
PSU: corsair c650
HDD: 1gb 7200rpm
MOBO: msi-970 gaming

I get to the login screen that says "Hi there, welcome back!", and when I press the "Next" button the login screen takes a long time and I get a loading cursor. If I press anything after that, the...