Plugged laptop in to TV - worked, now it doesn't work.

adaadat

I plugged my Acer laptop in to my Sony HDTV, via an HDMI cable, got weird stuttering, screen flashing boot-up and a warning about hardware acceleration, but the TV did at least mirror the laptop. Everything seemed OK.

I switched everything off and reconnected with a (much longer) Ethernet, to see if it would work (which it didn't), so returned to HDMI, but this time got nothing.

I've checked on the laptop that the screen is being 'sent' to the TV - pressed "Windows" key + "p" and selected the "Duplicate" option - but nothing is displayed. I've also tried various combinations of switching-off the TV and laptop, connecting and unconnecting the HDMI cable and re-booting the laptop, all to no avail.

What am I doing wrong?

adaadat

Got it working. Was a combination of a dodgy HDMI port (Acer laptop's been a big disappointment) and the following:

http://support.microsoft.com/kb/976064

Right-clicked desktop area > Screen resolution > "Duplicate these displays"
I had to use "detect" to find the TV. Also, bizarrely, my laptop screen is viewed as 2 monitors, side by side; listed as "1 | 2", with the TV being "3".