So my hard drive died a few weeks ago on my old Core 2 Duo system. I was able to get my data off the failing drive. I decided it was time to upgrade. I bought a new 6700K and a MSI Z270PCmate, a sata ssd, some Corsair RAM, and a Be Silent case. I planned on reusing my old power supply and XFX 7870 graphics card and reusing my Win 7 key. The power supply is not very old and the graphics card is plenty fast for what I do and it has two DVI outputs that work with my dual monitors. After assembling everything (I used to build PCs for work, so this is not anything new), it would not post. I always start troubleshooting by pulling out the GPU, and bingo, it posts. I knew the GPU had been working fine in my old system (which has a working drive in it now and is fine) so I tested the GPU in the old system and it works just fine. I rechecked the bios settings in the new system, everything was right. I put the GPU back in the new system and it still will not post. I took out the GPU, updated the bios to the latest version, checked the bios settings again, and it still does not work. I tried a few different hardware combinations and bios settings and could not get it to work. Am I missing something? Any help would be great. I have emailed MSI but I doubt they will be helpful. They always assume I am an idiot and do not know what I am doing.