Hi Nic,
@Nic: Some users are still experiencing either black screens OR Code43/31 issues on systems that utilize either 3rd party graphics cards or are using Intel-graphics only systems. If you are still having this issue, please provide that information here alongside an updated dxdiag report, and your system/motherboard model.
Resume:
HP Probook 4540s
Intel Core i5-3230M cpu 2.60ghz
ram 4gb
system: x64
windows 8.1 Pro
graphics: intel hd4000 and amd 7650M
BUG: Intel control panel no run. Driver version 3412 code 43.on bios switchable mode:ON
Intel control panel no run but driver version 3412 works correctly on bios switchable mode: OFF(really don't works).
Catalist control center never runs. Tested amd driver versions; from OEM HP, AMD site 13.12 final version, 14.1 beta and 14,2 beta.
After 6 month.. i'm seriously tinking downgrade to win 8