Quadra 3000 Driver Update Mistake

JayPMac

I have an HP Z1 Workstation (12G/500SSD/Wi-Fi/Quadra 1000M 2G) running the latest version of Windows 10. In trying to solve an audio issue, I accidentally downloaded and installed a Quadra 3000 driver. Now my WS will boot, but after the four blue rectangles appear, the screen goes black.  What are my options?

TSTonyV

During the initial boot up process (while it's on the HP logo) shut down the computer and restart it, then do that three times. 

If we do it right, it'll start automatic repair and allow you into some recovery options. We want to get into the Troubleshoot menu, then advanced options. Under advanced options there should be startup settings, which will allow you to boot into safe mode. If you can get into safe mode, you can roll back/uninstall the video drivers: 

https://community.microcenter.com/discussion/2858/how-to-roll-back-or-clean-install-video-card-drivers-in-windows-10