I have the same graphics card as you with the latest beta driver and have no issues with the installation. I don't know how you tried to install driver updates, but here is the way I did it. First though, run Windows Update and install the relevent "recommended" or "optional" updates. There are some that deal with .netframework and wdm.
To install new AMD graphics drivers:
1. IMPORTANT: All Windows Updates should be current, including the 'optional/suggested' updates
2. IMPORTANT: Disable all anti-virus/ad blockers/anti-malware/ anti-anything before trying to install
3. IMPORTANT: Netframework is required and must be the latest version. (from Windows Update)
Create a system restore point before, just in case.
Download the drivers for your computer to the desktop. Follow steps 1-5 ( http://support.amd.com/en-us/download ).
Do not use 'auto-detect and install.
Delete existing drivers from your computer:
In computer control panel select 'uninstall a program'
For computers with Intel processors:
Select AMD install manager and choose 'express uninstall all AMD software'
Including the install manager.
For computers with AMD processors:
Select AMD install manager and 'custom uninstall' the graphics drivers and CCC only.
Install the new driver suite.
Intel I7 960 @ 3.87ghz *Intel DX58SO *AMD R9 290 4gb *Corsair TX650M *2x4gb Corsair XMS3 *WD Black 1TB *Windows 7 Home Premium 64bit ***Asus N71Jq laptop *Intel I7 720QM Processor *Mobility Radeon HD5730 1gb *8gb Ram *Windows 7 64bit ** Toshiba P75-A7200 * Intel I7-4700MQ * Windows 8.1 64bit
***** cetera fallunt, ludere mortuus ******