Is there a guide on how to update the drivers in a system with HD4800 and HD6450 installed under windows7 64-bit?
It seems that the drivers for either are different now. Windows installation set 8.850.0.0 (19.04.2011), and I am unable to install any newer catalyst packages. It is either blue screen in the middle of the installation progress or a seemingly successful installation - after rebooting there is no driver that windows is willing to use though so 800x600 with single monitor it is.

I can't figure out a way to have both (or even either) work correctly with amd drivers.

Intel p5b-e board, 2 samsung 204b monitors + 720p tv.

Do you have a laptop? If so, here is info from HP....should be similar to other setups.

http://h10025.www1.hp.com/ewfrf/wc/document?cc=us&lc=en&docname=c02731962

http://h10025.www1.hp.com/ewfrf/wc/document?docname=c03048333&lc=en&cc=us&dlc=en

Intel I7 960 @ 3.87ghz *Intel DX58SO *HIS HD6970 2gb *Corsair TX650M *2x4gb Corsair XMS3 *WD Black 1TB *Windows 7 Home Premium 64bit *Gateway HD2401 24" 2ms 1920x1200  ***Asus N71Jq laptop *Intel I7 720QM Processor *Mobility Radeon HD5730 1gb *8gb Ram *Windows 7 64bit  ***Acer 5750 laptop

* A clear conscience is usually a sign of bad memory *

Not a laptop.
The HP pages show using a chip from same generation (6xxx series), I believe that 4 vs 6 require different drivers now.
The issue is that I can't install catalyst suite or drivers, not using catalyst suite. 

Try the following:

• Download CCC again (to rule out corruption in the download that you currently have)
• Download/install Driver Fusion
• Uninstall CCC completely
• Reboot into safe mode
• Right-click Driver Fusion choose "Run as Administrator"
• Select AMD Graphics
• Select Analyze
• Select Clean
• Reboot when prompted (into your regular OS)
• Install CCC
• Reboot 2-3 times before opening CCC up to allow it to complete configuring itself in the background.
• Re-test

The opinions expressed above do not represent those of Advanced Micro Devices or any of their affiliates.
Requiescat In Pace AMD Processor Forums | Member since: 1/19/2009 | Post count: 4142
Please don't PM me with questions, instead create a thread so that everyone can assist and benefit from the knowledge provided. Thanks in advance!

In the step of 'install CCC' I get
InstallManagerApp
Application Install: install source package not found
Did a fresh download of amddriverdownloader.
Receive an error:
Install manager version 08.00.0891 and shows 'currently installing: HDMI/DP Audio Driver' at the time.

Downloaded 12-10_vista_win7_win8_64_dd_ccc_whql_net4. Success in the end. Do 2 restarts and try to run CCC, result:
No AMD graphics driver is installed, or the AMD driver is not functioning properly.

Go to system restore (as am unable to get windows 7 default driver installed otherwise) and it says the following will be deleted:
amd (media) 05/11/2012 7.12.0.7708
amd, inc. (display) 09/27/2012 9.002.0.0000
amd catalyst install manager 8.0.891.0