Since I installed a graphics update a few days ago I am seeing a no signal message on my television when connecting with an HDMI cable. Unfortunately the update is no longer in my update history. I tried rolling back the graphics driver but this did not resolve the issue. My laptop recognises the connection, it even knows the television brand and model however the tv displays 'no signal'.
Thank you for your quick reply. Unfortunately your steps did not fix the problem. I don't really want to restore to factory settings but fear this may be the only option left!