I built new AMD 1045t 6 core with onboard graphics. Installed Linux Mint Nadia. Worked fine. Then I installed Geforce 660 2G ddr5 graphics card. Many error messages but still ran. Decided to reload Nadia. Now when I get to login it fails to take the user name and password but reboots to login screen over and over. I can log in from console. I've tried every fix I can find from console but nothing has fixed the problem. Any suggestions appreciated.
Addendum: Hate to say, but two days later I gave up and tried other distros. Amazingly, a very new distro, SolydK, loaded without prob, recognized need for latest nvidea driver, downloaded and installed it. Runs great, CUDA up and running. Keeping Mint (I can cheat on you baby, but I just cant leave you), on two other machines, but for the moment SolydK is what I need with this card. Maybe someone could put together SolydMint, LOL.