Hello.
I just recently purchased an HDMI compatible television, for the purpose of extending the screen on my Acer Aspire E1-510P-4402.
At first, I thought it might have been either a faulty HDMI cable, or television. This is not the case, however. The television works perfectly fine on another computer, using the same HDMI cable.
Since I isolated the problem to the laptop not reconising it, I tried to reboot my laptop, yielding no result on the second screen.
I also downloaded the latest version of the VGA Driver (Intel HD Graphics) from the Acer driver support site, then uninstalling the driver in Device Manager (and removing the driver files) -> rebooting -> reinstalling the driver (to be 100% certain of the latest version) -> then rebooting again. This also did not work.;
I also did the same thing with the Intel Chipset driver, seeing as it may have been a conflict between them. This resulted in no effect.
As a final measure, I also downloaded the Intel driver updater and installed it. The updater told me that a generic version of the driver may not work, and to contact the manufacturer for support with it.
After an hour of searching Google and not finding any good results, I turn to the forums and ask for help on how to fix this problem.