Let me know if you find anything in the BIOS which might be related to shadow mem, I can help identify if it's useful to you or not. Also what hardware do you have attached to the motherboard?
There is absolutely nothing in the BIOS that relates to shadow memory or caching. I used those as search terms to scan through the manual, and got no results. In the BIOS itself, I looked through every section and there was nothing related.
I messed around with some of the PCIe slot settings but none of those helped either; I'm not surprised.
At this point, I'm not sure what I should do. I am on the latest BIOS, and I have cleared the CMOS multiple times with different configurations.
For my hardware, I have an intel i5 3570k, 2 7970's, 2 6950's, 8gb of ram, 1tb HDD, 120gb SSD, 1 750w PSU and 1 600w PSU. For peripherals I have 1 mouse and one keyboard and 1 web cam. I also have it plugged in to my router with an Ethernet cable.