I have the same graphics in my Asus laptop. No issues at all installing the 14.4 or 14.6. I don't know how you install your drivers, but here is how I do it.
To perform a 'clean install' of 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.
Reboot into 'safe mode'
In safe mode run DDU (uninstaller) http://www.guru3d.com/files_details/display_driver_uninstaller_download.html
Select AMD graphics, analyse and delete all it finds.
Install the new driver suite.
NOTE! Certain laptop configurations are not compatible with AMD's Mobility Catalyst™ Driver.
AMD provides graphics drivers for most laptop brands and models for the Mobility Radeon™ HD series of graphics cards.
If the AMD Mobility Radeon Driver Verification tool reports that the hardware is incompatible, then the notebook manufacturer is the exclusive provider of the graphics drivers for your notebook. (GPU-28041)
Sony, Toshiba, and Panasonic will not accept generic drivers. Get drivers from manufacturers support site.
Laptops with 'switchable' graphics must use manufacturer supplied drivers.
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 ******