I have a new HP Spectre x360 with Intel HD 5500 graphics. When I'm in a quiet room or when I put my ear to the laptop I can hear a morse code noise. It actually sounds a lot like a HDD but of course this laptop has an SSD. I know the issue is the Intel graphics because when I disable it in Windows device manager, the noise completely disappears. When I re-enable it, the noise returns. It seems someone had an identical issue at https://communities.intel.com/thread/46838 but the response blamed in something else.
Any ideas? There are some reports of similar noises on this laptop and the Sony Vaio from what I can find using google. I find the noise extremely distracting, and disabling the device isn't an acceptable permanent workaround.