hy guys ! i have a lenovo e20 with 4gb of ram ecc memory, intel xeon x3045 xeon, nvidia quadro 600 gpu,kcas 600w 80+ brons psu, i recently bought a XFX r9 270x so to change it with the quadro so the problem that is the graphics card wont let my pc boot when i mount it , even when i did a bios...