Okay - I *think* I was able to get the modified INF to work properly now - it turns out there were many more instances where changes needed to be made that my original procedure did not address. The updated procedure is below with additional steps added.
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- AMD/ATI Radeon HD 2600 Pro drivers for Windows 7 64bit (3 files) AMD/ATI drivers for Radeon HD 2600 Pro and Windows 7 64bit Do you want to be notify of AMD/ATI Tech new drivers?
- I have been running windows 10 using dual monitors for over a year with no problem. One week ago following a reboot I lost the picture on one monitor. Following reboot the catalyst installer for my AMD ATI Radeon HD 2400 XT video card uninstalled and so now I have two monitors displaying the same image.
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Procedure to manually update iMac Radeon HD 2600 PRO video card under Windows 7 (64 bit).
Rationale:
> Boot Camp drivers incorrectly identify the video card my 24' iMac (Dual core; 2.8 GHz - graphics card is shown as a 'ATI Mobility Radeon HD 2600 XT') - this has been a long-standing problem when using my iMac under Boot Camp. There have been reports about how to update the drivers manually by obtaining them from ATI/AMD then installing them.
Background:
> When I was previously running Windows XP, I was able to perform the graphics driver update per the online instructions, without any problems.
> When I updated to Windows 7, 64-bit (because I was updated my Mac OS to 10.7 [Lion] and Windows XP was no longer supported in Boot Camp), I could no longer update the graphic card drivers to the Win7 64-bit version (it was giving an error that the driver was not supported).
> The solution I finally came upon was to modify the installer .INF file that comes with the drivers from AMD. I take no credit for this, except from the fact that I adapted a procedure I found for doing this for graphics cards in notebooks. The original place I found this is here <http://forum.notebookreview.com/gaming-software-graphics-cards/370695-guide-upda ting-your-ati-drivers-manually.html>.
NOTE & DISCLAIMER: I don't claim to fully understand every step that is going on here, nor if every step is needed. I based this on the procedure referenced in link immediately above and it seems to be working for me (that is, my graphics card driver was updated for Win7, 64-bit just like had been previously under WinXP) - YMMV.
>> This procedure was done with the AMD Radeon™ Desktop Video Card Drivers for '64 bit Windows Vista/Windows 7 '; Version 11.7, posted 2011-07-27 (main page: http://support.amd.com/US/Pages/AMDSupportHub.aspx)
1. Driver only was downloaded from AMD.
2. Downloaded file was installed to default location: C:ATI
3. Gather info about the graphics card:
a. Open the Device Manager (Start>Computer [right-click]>Properties)
b. Expand the 'Display Adapters' item to reveal the GPU (mine was listed as 'ATI Mobility Radeon HD 2600 XT')
c. Right-click on the GPU and select 'Properties'
d. Click the 'Details' tab in the Properties window.
e. Click the drop-down under 'Property' (top item should say 'Device description) - find the item in the list that says 'Hardware Ids'
>> There were four values for my card, shown below:
PCIVEN_1002&DEV_9583&SUBSYS_0083106B&REV_00
PCIVEN_1002&DEV_9583&SUBSYS_0083106B
PCIVEN_1002&DEV_9583&CC_030000
PCIVEN_1002&DEV_9583&CC_0300
f. Right click on the first value and select 'Copy' - paste it into a separate document.
g. Go back and click the drop-down under 'Property' - find the item in the list that says 'Inf section' (it was far down the list).
h. Copy the value shown there and paste into a separate document; my value read: ati2mtag_M76
4. Modify the INF file from AMD:
a. First thing I did was make a copy of the directory containing the files that were installed in step 2 (located at C:ATI) - my directory was called '11-7_vista64_win7_64_dd'.
b. Go into this path: C:ATISupport11-7_vista64_win7_64_ddPackagesDriversDisplayW76A_INF
c. Find the INF files (icon is a document with a gear on it), that start with 'C7...' and 'CH...' (mine were called 'C7122569' & 'CH122569').
d. Open the 'C7...' file (it opens in Notepad).
e. The first thing I did was find and replace all existing instances of 'M76' in the INF (I arbitrarily replaced it with the following value 'M7a6'). There are a number of existing references to this property type in the original INF.
> I do not know if this is absolutely necessary but I found that it helped me to distinguish what was originally there with what I was modifying.
f. Do a 'Find' command for 'ATI Radeon HD 2600 PRO' (if you search for a shorter phrase, be aware there are other '2600 PRO' cards in the list).
> The exact line I found was <'ATI Radeon HD 2600 PRO' = ati2mtag_RV630, PCIVEN_1002&DEV_9589>
g. Replace that line with the Inf section value and the first Hardware ID value, using the same format as the original line. The new entry I made read (notice that each successive entry has an addition <space> between the end of 'PRO' and the ending double quote):
'ATI Radeon HD 2600 PRO' = ati2mtag_M76, PCIVEN_1002&DEV_9583&SUBSYS_0083106B&REV_00
'ATI Radeon HD 2600 PRO ' = ati2mtag_M76, PCIVEN_1002&DEV_9583&SUBSYS_0083106B
'ATI Radeon HD 2600 PRO ' = ati2mtag_M76, PCIVEN_1002&DEV_9583&CC_030000
'ATI Radeon HD 2600 PRO ' = ati2mtag_M76, PCIVEN_1002&DEV_9583&CC_0300
h. Next do a find for all instances of 'ati2mtag_RV630'; for every instance you will need to replace that value with ' ati2mtag_M76'.
i. Next do another find for 'RV630' and make sure to replace all instances with 'M76' (this is to catch the couple of places where it doesn't have the 'ati2mtag' prefix)
j. Close the file, saving your changes.
k. Repeat steps 4d - 4i, using the 'CH...' file.
Ati Radeon Hd 2600 Xt Driver Windows 10 64 Bit Free
> I personally do not think this is needed since I believe the 'C7…' INF is for Windows 7 and 'CH…' is for Vista, but I modified both anyway.
5. Update the graphics driver using the modified INF files:
a. Go back to the Device Manager and expand the 'Display Adapters' item again to show the 'ATI Mobility Radeon HD 2600 XT' GPU
b. Right-click on the GPU and select 'Update Driver Software...'
c. In the resulting window, choose 'Browse my computer for driver software'.
d. I navigated to the 'C7...' file along the following path: <C:ATISupport11-7_vista64_win7_64_ddPackagesDriversDisplayW76A_INF>
e. At this point, I was shown a window that showed 'ATI Radeon HD 2600 PRO' twice (that's all that was in the list). I selected the first instance and it moved on.
f. I got a warning that the driver was unsigned, obviously I allowed it to move forward with the installation.
Ati Hd 2600 Xt Driver
g. The updating proceeded and the screen momentarily went black, twice. After the second time the description in the Device Manager changed to reflect that the GPU was now 'ATI Radeon HD 2600 PRO'.
FINAL NOTE: as of right now everything seems to be running properly and I have experienced no problems or graphical glitches. If anyone reading this sees an obvious problem with what I've done, please let me know. I have run benchmarks between this and the standard installed mobility driver and I get about a 10% increase in overall FPS (using the free 'NovaBench' app by NovaWave).
Ati Radeon Hd 2600 Xt Driver
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