Updated 360, HDMI lead now not working

started my Xbox 360 up and began updating to the new dashboard.

However, once the update was complete the screen went blank, and a message on the TV read 'Mode Not Supported'

The Xbox boots up fine... But is there a problem with the HDMI cable? The 360 works fine with the AV/VGA cable just dosn't work at all with my HDMI cable attached

The TV works fine - but do I have to change any settings?

btw my TV is a Samsung LE22S8

Any help is appreciated

Thanks

Thanks for the help :)

Does anybody have any idea how i can change the settings on my TV???

It just dosnt make any sense though that my HDMI lead worked fine when usuing the old dashborad but now i have upgraded my 360 it stops working
Just seems like a pointless upgrade to me if it messes up all the settings

Thanks for the help people

tbh i dont think its the TV cos i have tried messing with the settings, but surely if it was something to do with the TV the HDMI lead would not have worked at all to start with

I will have a go at changing the settings 'blind' and see if that works

I ll keep u updated if that works or not

Thanks All :)