I have a Lenovo B570 that does not recognize the TV when I connect it to the HDMI1 port, however, it does work when I plug in on the HDMI2 port. The TV says "No signal" and the laptop does not recognize any connection, it doesn't even make the windows sound of when you plug in a device, but everything works fine on the HDMI2 port which is what confuses me. I'm using a Philips 43PFG5101/77 as TV.