I installed these without any major hiccups. Noticed on the GeForce.com forum that they've identified what caused the black screen/flickering issue with the v310.33 beta drivers on Windows 8:
1) Flickering Screen/Black Screen After Installing R310.33/R310.54 Drivers on
After installing the R310 driver on Windows 8, the subsequent reboot results in a black or
This occurs because Windows Update performed a background installation of a Release
304 driver, which requires a reboot to complete the installation. After installing the
Release 310 driver and then rebooting the system, installation of both the Release 304 as
well as the Release 310 is completed, resulting in conflicting driver binaries and the black/
Workaround - Prevention
To avoid the issue, reboot the system before installing the Release 310 driver.
Alternately, you can check the driver status under the Device Manager and perform the
reboot if the Device Manager indicates that a restart is needed. Then install the driver.
Workaround - Recovery
If you did not perform the necessary reboot prior to installing the driver and now
encounter the black screen, do the following:
1 Reboot in Safe Mode.
2 Uninstall the driver.
3 Disconnect from the internet and then restrt the system.
4 In normal mode, install the new driver."
- The Workaround - Recovery from Darren Hodgson fixed my problem people. After all it appears some people had it too.