Has anyone ever had a problem from installing too many devices in their mac and draining so much power that it causes an issue with bootup. I recently purchased a 2010 5,1 mac pro, 12x2.6. I installed 6 drives, including one regular drive and one SDD in optical bays, plus Geforce 225, Radeon 5770, and Newertek USB-3/sata card. And I noticed that it takes a couple of tries to get the machine to bootup. I called the place where I purchased and they informed me that I might have too many things, ie drives and graphics cards, drawing too much power. Anyone else have experience with this? Thanks, G