Changing to power-saving results in losing picture on the screeen

Question

Hi,
Product name: HP Pavilion dv6-6093ex Entertainment Notebook PC support.
Product number: LM610EA#A2N
When changing to power-saving GPU, then Radeon got disabled and no picture on the screeen is shown.
I really had been facing a problem with my Windows 7 Home premium 64Bit, then I have only done a repair install, which
didn't delete all the drivers and programs. However, before doing the repair install, I was recommended to uninstall AMD
Readon and Intel(R) Management Engine Interface.(AS shown below). Thus, I have uninstalled the AMD Readon, and Intel(R)Management Engine Interface.
Upgrading Windows will affect the following devices and/or programs: 
These devices might not work properly after the upgrade. Before upgrading, we recommend updating the drivers for these
devices. Cancel the upgrade, open Control Panel and search for "update device drivers", or go to the device manufacturer's
website to search for updated drivers.
System devices: Intel(R) Management Engine Interface
These programs might not work properly after the upgrade. We recommend uninstalling these programs before upgrading. Cancel the upgrade, open Control Panel, and search for "uninstall a program". (Note: Programs marked as * can be safely reinstalled after the upgrade.)
ATI Catalyst Control Center *
When the repair install got completed, then I found that Grphics adapter is still functining well since there are no ! mark in front of the adapters: Intel(R) HD Graphics Family and Radeon(TM) HD 6770M in the device manager.
Once I changed the GUP from High-performance GPU to Power-saving GPU, then I lost the pircuter on the Screen.
When I lost the picuter on the screen while on Windows in normal mode, I booted to the safe mode, then opened the device manager, and I saw that Radeon(TM) HD 6770M was disabled
To get picture again,  I enabled Radeon(TM) HD 6770M (screen shot below) while in Safe mode: 
When restarting my PC and started Windows in the noraml mode,  the picture returned on the screeen.
Whenever changing to power-saving GPU, then the same problem happens.
Will I need to reinstall the AMD High-Definition Graphics Driver, although there are no ! mark in front of the Intel(R) HD Graphics Family and Radeon(TM) HD 6770M  in the device manager?

Answer 1

Thank you so much indeed,
Could you please take some of your precious time out to really answer these questions below of mine?
Firstly:: I really have run this Utility(amdcleanuputility) to remove all components of the prvious installation of AMD Radeon and Mobile Inte Graphics.
I was propmted that  tool will do as it is shown below in the screen shot.
I agreed. Then, it completed. Is 'AMD cleanup utility' recommended by you?
Then, the graphics adapters in the device manager became as follows:
Secondly: I think that it is now the point to reinstall AMD High-Definition Graphics Driver_Software Packaging Numbr(SP55092)_Driver Version 8.882.2.3000.
Thirdly: Moreover, I would be saying that I lost the audio on my System once the (amdcleanuputility) has completed, although its icon is still intact(screen shot below)
Must I need to reinstall IDT High-Definition (HD) Audio Driver_Sp55094_Version6.10.6345.0????
Finally::  in your link about downloading the drivers for my product name. I found Driver-Graphics (5) . However, all what I need is the finall one which is an already-downloaded file with me. Could you please let me know what about the other four graphics drivers????????