SmithyBoy99

Hey guys was wondering if i could get some help with an issue I'm having with my custom build. The pc crashed the other day when i was playing CS:GO and would not boot to windows when the display was plugged into my graphics card when i attempted to turn it back on. When booting with display hooked up to my graphics card (HDMI) i could get into BIOS however when it past the motherboard boot stage it rent into an endless cycle of just saying "diagnosing your pc" with out going to the following blue screen recovery stage. I could initially launch to windows using the onboard graphics if i unplugged the graphics from PCIe slot. However after a few reboots the same never ending "diagnosing system" occured. At one point i was able to boot with the graphics card in after i had removed the drivers but while installing some older ones it went to black screen and then had the booting issues again. I tried another graphics card in the machine and this too permanently black screened mid driver installation. My current thinking is motherboard issues, either with the board or the PCIe slot. However when trying the card in a different PC it also lost display output mid driver installation. It is an older machine however i'm looking to get the most out of it atleast until January when i plan to upgrade. Any help or advice you guys can offer would be greatly appreciated. Thanks Specs: I7 - 4790k - CPU 16gb (4 x 4gb) DDR3 1600MHz Vengeance Corsair - RAM Gigabyte - GA-Z97P-D3 - Motherboard Kingston 256gb ssd Toshiba 1TB HDD 2TB SSHD Windows 10 - OS ACE 750W BR PSU Displays - Samsung S27F350FHU Samsung S24A300BL