Catalyst 12.3 upgrade

I have been trying to upgrade to 12.4 but I keep ending up after install with 12.3. Discovered I need to uninstall first through control panel on my Win & HP w AMD 7750. Problem is my screen goes checkerboard after driver uninstall and I cannot see to complete process. I know I am missing something simple here but im lost.
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More about catalyst upgrade
  1. Try to uninstall from save mode (from device manager). Then boot up normally, there it should be booting fine (The resolution changes though). Then from there, download Catalyst 12.4/12.6 Beta.
  2. Did the job...but by he time I tried again it was 12.6. Not sure if it was your fix or the new version. (Let's say t was you:))In any event now running 12.6 and it seems stable. Thank you for your helpful response.
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