Why can't I enable CrossFireX?

So I built a new machine recently, and I cannot seem to get CrossFireX to work. This is my first time using multiple ATI cards with CrossFire.

Screenshot 1 shows option window before checking Enable CrossFireX box.

Screenshot 2 shows option window after box is checked, but before Apply is clicked.

Screenshot 3 is really just screenshot 1 again, because this is what happens after I hit Apply; it freezes for about 10 seconds, then the check mark disappears. and... Nothing happens.

 Screenshot 1
 Screenshot 2
And CrossFire Diagnostics shows this:

CrossFire Diag
Hardware details:

 
Primary Adapter		
Graphics Card Manufacturer	Powered by AMD	
Graphics Chipset	ATI Radeon HD 5700 Series	
Device ID	68B8	
Vendor	1002	
	
Subsystem ID	2140	
Subsystem Vendor ID	1462	
	
Graphics Bus Capability	PCI Express 2.0	
Maximum Bus Setting	PCI Express 2.0 x8	
	
BIOS Version	012.020.000.040	
BIOS Part Number	113-AC36801-100	
BIOS Date	2010/08/26	
	
Memory Size	8958 MB	
Memory Type	HyperMemory	
	
Core Clock in MHz	850 MHz	
Memory Clock in MHz	1200 MHz	
	
	
Enabled Adapter 		
Graphics Card Manufacturer	Powered by AMD	
Graphics Chipset	ATI Radeon HD 5700 Series	
Device ID	68BE	
Vendor	1002	
	
Subsystem ID	2980	
Subsystem Vendor ID	1682	
	
Graphics Bus Capability	PCI Express 2.0	
Maximum Bus Setting	PCI Express 2.0 x8	
	
BIOS Version	012.014.000.004	
BIOS Part Number	113-HD575XZNF75_113-C01201-021	
BIOS Date	2009/12/14	
	
Memory Size	1024 MB	
Memory Type	GDDR5	
	
Core Clock in MHz	700 MHz	
Memory Clock in MHz	1150 MHz	
Total Memory Bandwidth in GByte/s	73.6 GByte/s

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Software details:

 
Driver Packaging Version	8.892-110914m-125030C-ATI	
Catalyst Version	11.9	
Provider	ATI Technologies Inc.	
2D Driver Version	8.01.01.1186	
2D Driver File Path	/REGISTRY/MACHINE/SYSTEM/ControlSet001/Control/CLASS/{4D36E968-E325-11CE-BFC1-08002BE10318}/0002	
Direct3D Version	7.14.10.0860	
OpenGL Version	6.14.10.11079	
AMD VISION Engine Control Center Version	2011.0908.1355.23115

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DxDiag:

 DxDiag.txt

Any ideas?
MikeR428Asked:
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MikeR428Author Commented:
GPU-Z captures are below. They show CrossFire NOT enabled, but available.

 GPU 1
 GPU 2
jamietonerCommented:
Is the crossfire bridge installed? Is the PSU capable of running both cards full throttle? It looks like you are trying to crossfire a HD5770 and a HD 5750. According to ATI this should work, as the 5770 should clock down.
MikeR428Author Commented:
Bridge is installed.

This is the PSU: http://www.newegg.com/Product/Product.aspx?Item=N82E16817139011

And I checked AMD's CrossFire matrix before picking my card. I'm baffled here.

I've tried uninstalling the graphics drivers, running DriverSweeper, re-installing drivers, no dice.

According to the VISION ENGINE Control Center, as well as GPU-Z, CrossFire is available. But for some reason, I simply cannot enable it. :(

I'm seeing a lot of this in my Windows Event Log, though I'm not sure if it is related. I'm installing Microsoft Visual C++ 2008 SP1 Redistributable Package (ia64) to be sure, though.
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MikeR428Author Commented:
Forgot to include the Event info...

 
Log Name:      Application
Source:        SideBySide
Date:          10/4/2011 8:49:24 PM
Event ID:      33
Task Category: None
Level:         Error
Keywords:      Classic
User:          N/A
Computer:      EVEL-PHENOM
Description:
Activation context generation failed for "C:\Windows\system32\conhost.exe". Dependent Assembly Microsoft.Windows.SystemCompatible,processorArchitecture="amd64",publicKeyToken="6595b64144ccf1df",type="win32",version="6.0.7600.16816" could not be found. Please use sxstrace.exe for detailed diagnosis.
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="SideBySide" />
    <EventID Qualifiers="49409">33</EventID>
    <Level>2</Level>
    <Task>0</Task>
    <Keywords>0x80000000000000</Keywords>
    <TimeCreated SystemTime="2011-10-05T00:49:24.000000000Z" />
    <EventRecordID>10901</EventRecordID>
    <Channel>Application</Channel>
    <Computer>EVEL-PHENOM</Computer>
    <Security />
  </System>
  <EventData>
    <Data>Microsoft.Windows.SystemCompatible,processorArchitecture="amd64",publicKeyToken="6595b64144ccf1df",type="win32",version="6.0.7600.16816"</Data>
    <Data>
    </Data>
    <Data>
    </Data>
    <Data>
    </Data>
    <Data>
    </Data>
    <Data>
    </Data>
    <Data>
    </Data>
    <Data>
    </Data>
    <Data>
    </Data>
    <Data>
    </Data>
    <Data>C:\Windows\system32\conhost.exe</Data>
    <Data>
    </Data>
    <Data>
    </Data>
    <Data>
    </Data>
    <Data>
    </Data>
    <Data>
    </Data>
    <Data>
    </Data>
    <Data>
    </Data>
    <Data>
    </Data>
    <Data>
    </Data>
  </EventData>
</Event>

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MikeR428Author Commented:
Just for the heck of it, I went ahead and uninstalled the drivers again, rebooted into safe mode and ran DriverSweeper again, and then reinstalled again.

Now, CrossFire is listed as "Enabled (2 GPUs) in GPU-Z and in the VISION ENGINE Control Panel.

Thats Windows for ya...

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MikeR428Author Commented:
This worked, for some reason...
jamietonerCommented:
Glad to here its working.
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