It sounds to me as if you are saying you updated both graphics processors. If that is so...then that's where you went wrong.
You only install one driver. Laptop graphics update...How to
For laptops with AMD processors/APU's:
You do not update the discrete graphics card...you update the APU. This updated driver serves both the integrated and discrete graphics. It is the only driver you install.
I would do a clean install using DDU in safe mode.
** Windows 7 and Windows 8.1 must be fully updated before attempting to install any AMD driver. All 'critical', 'recommended', and 'optional' (no language packs,etc) updates as well as any Service Packs (SP) must be installed before any attempt to install graphics drivers. If you do not get this message .... keep installing until you do: