Am sorry, am not too technical. what do you mean by GPU? Anyway, to start, I have an extra VGA monitor, an LG flatron l177WSB-PF. I wanted to use this as a tv box monitor so i decided to buy an HDMI to VGA converter with audio. the converter brand is UNITEK (China) https://www.unitek-products.com/col...hdmi-to-vga-converter-micro-mini-hdmi-adapter. My problem is when i connected this converter to my monitor and to my tv box i get an "out of range"monitor message.If one end of the cable is to your LG monitor, what is the other end of the cable connected to? A laptop or a discrete GPU or the motherboard? A link to the cable you've purchased would be a good idea. Some cables are not bidirectional and or have a defined resolution to work on.