View Full Version : Overscan compensation on GeForce 8800 series

05-02-07, 12:51 PM
Q: Why am I not able to resize the HDTV Desktop (adjust overscan compensation setting) with GeForce 8800 based graphics cards on Windows XP?


Overscan compensation is not supported on GeForce 8800 based graphics cards when connecting to many HDTVs over a digital interface (i.e. DVI) with the default driver settings. However, with ForceWare Windows XP drivers v158.22 or higher, overscan compensation over DVI outputs can be enabled via a Registry Key workaround. To enable this workaround, perform the following steps:
Download the following file onto your PC: (hyperlink to EnableOverscanCompensation.exe)

Double-click the "EnableOverscanCompensation.exe" executable. This will run a macro to create the "EnOverscanComp" Registry Key in the Windows Registry.

3) Re-boot your PC. (Note: we have seen one PC configuration which requires two re-boots).

4) Open the NVIDIA Control Panel by right clicking on the Desktop and selecting "NVIDIA Control Panel". From the "Resize HDTV Desktop" option in the navigation pane of the NVIDIA Control Panel you can resize your Windows Desktop to fit the viewable area of your HDTV.

The above workaround can also be used to enable fixed aspect ratio scaling on similar display configurations.

Note: this workaround will disable HDCP (high-bandwidth digital content protection) support, which is required for playback of protected HD-DVD and Blu-Ray DVD content over digital interfaces. To disable this workaround and re-enable HDCP support, remove the EnOverscanComp Registry Key by running the DisableOverscanCompensation.exe executable (hyperlink to DisableOverscanCompensation.exe) and then rebooting your PC.

The link to the Knowledge Base Article on how to configure this option is http://nvidia.custhelp.com/cgi-bin/nvidia.cfg/php/enduser/std_adp.php?p_faqid=2064, live. The driver is available now at http://www.nvidia.com/object/winxp_2k_158.22.html

05-02-07, 02:13 PM
Thanks for the info. I'll play with this later when I get home. Might try it on Vista too, just for the heck of it.

Sucks that it disables HDCP but AnyDVD HD easily overcomes that minor hurdle.

05-02-07, 02:51 PM
Good news. Downloading

Tested with 158.22 and 165.01.
Just like with 100.xx :
SLI works. Resolution stands at 1920x1080 (96.xx reduce to 1824x1028) and the downscaled image is a little blurred.

05-02-07, 04:38 PM
Tried the fix and it works well under XP for me.

Tried it on Vista with the 158.24 drivers. No go. :(

Maybe this means they are getting close to getting it implemented on Vista though.