My computer is brand new so I don't think that it has anything to do with it, do you mean hardware failure is within the monitor? I do have a 3 year warranty but they told me that I have pay for the costs (around 100 euro) if they don't find a problem which concerns me. It only happens in game mode ...

My screen worked fine with VGA but it gives the screen low quality picture. So I changed to hdmi. Then it stopped working properly. It started with that that the screen turned off when exiting windows mode (no signal) so I had to turn it off and turn it on manually when ''logging out, turning on gam...