I think he's saying he's got no video through HDMI after upgrading to the 2509 drivers (the latest).
As discussed in this thread, http://communities.intel.com/message/141920, the Windows Update version of the 2509 driver seems to cause this problem. Why Intel hasn't pulled this update or fixed it is beyond me.
What you can try:
- if you haven't already, download the 2509 driver from Intel, save it to your HDD somewhere
- unplug from ethernet
- turn off wireless
(such that you are not connected to the internet -- we don't want Windows automatically grabbing the driver via Windows Update)
- uninstall the 2509 driver (if there is uninstall option from control panel, do that, if not uninstall from device manager)
- you should now be running the standard VGA driver
- now install 2509 that you downloaded from Intel site
Hopefully that works... Otherwise you have some other HDMI issue.
Also, you didn't mention what BIOS you are running or what motherboard you have. You'll want to make sure you have the latest available for your board. Your mileage may vary if you have other than an Intel board, as the third-party MB vendors have been very poor at upgrading the VBIOS with their BIOS updates... and that could be an issue too.
Might be an incompatibility problem between your MB and the TV. I have two different SandyBridge systems working with 1080p TVs, and another running on an older TV at custom resolution of 1366x768. I'm using Intel motherboards though.
Do you have a different 1080p TV you could test with -- perhaps one owned by friends/family? Might be worth a shot. Also you might want to try different inputs/configuration options on the TV itself.