I removed the Quadro 5000K and reinstalled the CPU, removed all but one memory stick. And all drives I reset the CMOS. Now i get a 99 error. But at least it posts...still no video out from the built in, so I don't get anything on my screen. As far as I know there are no PCI.e devices. I do have my three SATA drives still attached. So i,m still at the error 99 and can't see a reason.