About a year ago, i received a notification from AMD CCC to update the driver and did so. Since then, the 7400m stopped working and still failed to do so after;
a) rolling back drivers
b) reinstalling drivers from HP website
c) using system restore to Factory Settings
After some research i found that the Discreet GPU's in HP Laptops will only work with drivers offered through HP but those fail to fix the issue too.
I have set Powerplay to use Max Performance and even tried disabling ULPS, which ofcourse failed as system is locked to 'Dynamic only setup'
Active Power Plan still shows as High Performance, yet it is the intergrated GPU in use, not dedicated
Also recently upgraded to Windows 10, had no issues but GPU problem remains
AMD Catalyst Control Center still shows I have the 7400M and hardware monitoring from MSI Afterburner shows its temperature at 45C but 0% GPU Usage.
When running games which with Powerplay enabled, used to run on the 7400M, still run on the weak Intergrated Intel Graphics.
HP Support Assistant cannot detect any problems, Troubleshoot
HP Pavilion dv7-6b51ea
Appreciate the help.