HDMI lead won't work when connecting laptop to TV

[Chambersmic]

Hello all...

I recently got my old laptop up running. It uses vista 2006 I think.
I connected it to the TV via HDMI and it came up on the screen first time, then I changed it back to set up what I wanted to watch while the others watched something on another channel, and now the TV is saying no input found.
The most annoying thing is the laptop is making the noise to say the lead is connected, but as soon as I change the output to the HDMI channel I've plugged it into the noise comes up as if I've disconnected it manually.
I've checked a few links and the answer side found seem to work to a certain stage ie I play with certain settings which go well until I change the source to my chosen HDMI and then it resets what ice just done so to speak.
I know it's an old system and I would ordinarily just put it down to this but it 100% worked first time which is why I want to get to the bottom of this. Any help would be great. Thanks!

 

[ssddx]

are you running the laptop in projector mode? perhaps when it detects that you are no longer using the hdmi output it switches back to non-projector mode.

i would have the tv set to the right input, connect the cable and cycle through your projector modes until you get to the one you want. it should come up with video. sometimes the hdmi handshake between devices is a bit..... difficult..... to work with at times. sometimes the order which you turn on devices or the order you connect things up matters. some devices are pretty touchy.

 

[americanaudiophile]

It may be that your TV is not "handshaking" or detecting the PC because it only looks for it when turned on in a different order. Try turning on the TV after the laptop is booted since it came up the first time you tried it that way.