gpu rx590

Hi, I am facing a problem with PC not powering up if I connect New GPU. Specifications: MoBo: Gigabyte B85M-D3H (rev 1.1), Updated with recent UEFI BIOS available. CPU:Intel Core i7-4770 CPU @ 3.40GHz, 3401 Mhz, 4 Core(s), Windows 10 x64, updated to the latest RAM: 32 GB PSU: SEASONIC 750w So...