dantiags, on 17 September 2012 - 14:28, said:
I´m having the same situation with ATI Mobility Radeon X1400 in Windows 8 X64 .... Did yoy solve this problem in Windows 8 X64??? or only in 32 Bits?
Yes, I solved this problem the other day with an ATI Mobility Radeon X1300 and Windows 8 x64.
Here is how to do it:
1. Download ATI Catalyst 9.3
and extract the installation files.
2. Modify the drivers using Mobility Modder
(the tool doesn't seem to work on Windows 8, but it works on Windows 7).
3. Disable driver signature enforcement
and install the driver '9_3_vista64_win7_64_dd_ccc_wdm_enu\Driver\Packages\Drivers\Display\LH6A_INF\CH_76829.inf' in Device Manager, i.e. Update Driver Software... > Browse my computer for driver software > Let me pick from a group of device drivers on my computer > Have Disk.