techguy378
03-07-2012 12:27 AM (7 days ago)
I have an HP Pavilion dm4-1200 CTO Entertainment laptop with switchable graphics. For some reason when I install the 64-bit Windows 8 Consumer Preview the only graphics adapter that works is the integrated Intel one. I did a clean install of Windows 7 with the out of box restore option (not the minimal install one) using HP's recovery partition on the laptop. Then I did an upgrade to Windows 8 from within Windows 7 using the Windows 8 Consumer Preview setup program. Windows 8 does have a driver for the AMD Mobility Radeon HD 6370 GPU but in Device Manager it says the device cannot start. I've installed the latest graphics driver in Windows Update but I'm still having the same problem. If I install the beta Windows 8 driver on AMD's website my laptop's screen goes blank. The only way to get it back on is to boot into safe mode and use System Restore to roll back to the way my system was before installing the driver. What did HP do to this laptop to prevent the installation of non HP drivers? How do I get around this? I need the AMD graphics to work so I can use the HDMI port.