Boot Guard DXE failed system verify due to a corrupt BIOS. The affected user encounters the error message right after the manufacturer’s logo is shown when the system is powered on. Bios recovery with USB2 fat32 device may be only option.
Whenever I turn on my dell 3040 it shows the following Boot Guard verified failed System will shutdown Press any key I tried a bios reset but the system just hangs and the power button blinks orange 3 times, stops, then 6 times, stops and goes back to three and continues forever (dose that mean anything?). I also tried a new CMOS battery, new HDD, new sata cables, and pressing f12 on startup to force it to boot to windows (which didn't work). Any idea of the issue and do I need a new mainboard to fix it? Thanks for any ideas!!!  
Dell Optiplex 3040 boot guard verified failed