Why would this happen

[Aaron9546]

I was just using my pc connected to my TV then I didn't use my pc for like 15 minutes so it goes to "no signal" Usually I just move my mouse and it comes back on gain this time it didn't so I turned it off and back on it came on the screen to press f2 for bios then passed that and went onto the windows loading logo then it just during the middle of that goes to "no signal" I was using it like 5 minutes ago no problems the exact same thing happened with my laptop a week ago??

 

[glamdringfh]

Could be a few things, but off the top of my head:

- If you unplug your laptop from the TV after the 'No Signal' shows up does your laptop display resume? It might have timed-out the video signal and needed to be reset.

- It sounds like your cable connections might be loose on either the laptop or the TV, be sure they are as secure as possible.

 

[Aaron9546]

Could be a few things, but off the top of my head:

- If you unplug your laptop from the TV after the 'No Signal' shows up does your laptop display resume? It might have timed-out the video signal and needed to be reset.

- It sounds like your cable connections might be loose on either the laptop or the TV, be sure they are as secure as possible.

Once I unplug my laptop hdmi the laptop just comes back on as normal... but my laptop and pc have the same now issue both get to windows then no signal don't think it is loose hdmi cables that was the first thing I checked.... but the sky box works fine on the tv I mean to get the pc or laptop to even show the boot part I have to turn my tv on the plug the pc/laptop in through hdmi then restarts the pc/laptop where as the sky box I can just plug it into the tv while its on and it will show up on whatever its on no need to turn off/on

 

[InvalidError]

If you connect your PC or laptop to a different display after your TV starts showing "no signal" without rebooting, do you get anything? If you don't, then your PC/laptop may have crashed.

As for what could cause your PC/laptop to randomly crash when connected to your TV, this could be due to the TV being defective and sending excessive electrical noise down the video cable or noise/surges being introduced in the ground and signal loops between your TV, laptop/PC, whatever else you may have connected to them which is connected to other grounded equipment or cables.

The easiest way to check if your problem might be related to ground loops would be to connect everything to a single power bar if you are not doing so already. If you have a coax cable going to your TV or modem, either disconnect it or use a power bar with coax grounding/surge protection, same for DSL, Ethernet or other signal cable from some other location connected to the equipment cluster you are having issues with. If grounding all connected equipment closely together fixes your issue, then you know with fairly good certainty it is a noise/surge pickup problem with ground.