Driver Installation failure

Background:

GPU: XFX HD 5700
OS: Windows 7 Ultimate

I just uninstalled my 10.4 to update to 10.10 since I read somewhere that 10.10 improves/fix the Call of Duty:Black Ops multiplayer stutter/lag.

Here's what I did first:

1. Uninstalled 10.4 by using the catalyst installer and choosing unsinstall instead.
2. Rebooted
3. Ran driver sweeper, then rebooted again.
4. Installed 10.10
5. Rebooted.
6. Then I got an error saying that driver was not installed. (similar to what Ill post below)

I did steps 1-5 for 3 times but still got an error after the final reboot.

Finally I thought I'd try 10.11 so I uninstalled 10.10(where the driver was not installed, but the components I wanted to remove). I followed steps 1-3, but instead of 10.10 I installed 10.11. I still got the same error.

Here's the screen cap:



P.S.

I installed some ATI updates(about two) when my Windows updated