I recently built my PC hooked it up with a "Full HD Monitor" and noticed when it started in windows it was in 1024 x 768 mode. What is weird is that I'm 100% sure that it is HD ready because when it starts up it displays a note that says it is in 1024 x 768 and to change it to 1920 x 1080. Is it the HDMI cord? I didn't use the HDMI cord that came with the monitor and used a random one. Could that be why?
Monitor: https://www.newegg.ca/Product/Product.aspx?Item=N82E16824025515
Monitor: https://www.newegg.ca/Product/Product.aspx?Item=N82E16824025515