I recently bought a NVIDIA Geforce GTX 750 1GB graphics card and am trying to support two monitors but when i plug in the second monitor it gives me a "no signal" message and shuts off. My main monitor is working as it should and is an Asus VH238H if that helps and the one I am trying to get to work is an Acer AL1751 (from 2007-2009) and I'm just hoping the Acer is too old and i can just get a more up to date monitor and have my solution solved. However, I have tried plugging the blue cord into two other laptops as well and they are not popping up as another monitor either. A final note is i have all the correct chords pluged into the correct places. Thank you for any help you can provide.