Dell Monitor display not work since Windows 8.1 upgrade

[ToastyX]

DisplayPort to VGA adapters are not meant to be used with higher-resolution monitors. The U2913WM should be connected directly using dual-link DVI or DisplayPort. Get a proper DisplayPort cable with mini DisplayPort on one end and regular DisplayPort on the other end like this: http://www.monoprice.com/Product?p_id=6007

Also, make sure you have the latest graphics driver. I think this is it: https://downloadcenter.intel.com/Detail_...ldID=23323