Hello, tech support? Ubuntu broken after Nvidia driver update.

[DireWolfM14]

Howdy all, I need a little help.  My rig doesn't seem to like Ubuntu 18.04 after I update my GPU drivers.  The rig will boot up to the login screen, but after I input my password it goes to a black screen for a second and then back to the login screen.  I've reinstalled the OS several times, and the problem only starts after I've installed the Nvidia GPU drivers.

I've tried updating them by using the autoinstall command, which selects version 390 and also using the graphics-drivers ppa to install version 396 and 410.  They all result in the same issue.

Any help you can offer is much appreciated.  

Setup:
Asus B250 Mining Expert mobo
Intel Pentium G4400 Processor
8gb DDR4 2666 RAM
Ubuntu 18.04
1x Dell 520w PSU
1x HP 980w Server PSU

GPUs:
1x AMD 5775 (2gb) (used for posting)
2x EVGA 1080ti (11gb)
2x EVGA 1080 (8gb)
2x MSI 1070 (8gb)

[astraleureka]

You need to check the actual X server logs, /var/log/Xorg.0.log or similar