I have a Dell T3500 Workstation. It has been very reliable and haven't had any problems with it since I bought it in 2011 until recently. I currently have 2 Nvidia Quad Cards with 6 monitors attached. 4 Monitors attached to 1 Quad Card and 2 Monitors attached to the other card. The problem started when I turned on the PC and got this message - Alert ! Error Initializing PCI Express Slot 2, Strike the F1 Key to continue, F2 Run Set Up Utility, Press F5 to Run onboard Diagnostics. At first when I hit the F1 key the PC rebooted and both cards worked with all 6 monitors working. But after a few weeks of doing this only one card is working with the 4 monitors. I contacted Nvidia and they told me its a problem with the motherboard. I contacted Dell but didnt get a reply properly because its out of warranty and 9 years old. I have since changed the cards because i had a few spare and the problem is still persisting. Anyone else have similar problem.