HELPROOM ANSWER I've come across problems in the past where machines with standalone graphics cards are unable to correctly direct the display signal until after the Bios has loaded. Since your PC isn't getting this far, try plugging your monitor into one of the two onboard connections (VGA or SVGA) instead. Also .
Once you're able to access the Bios, ensure the display settings are set to either 'Auto' or 'PCIe'. This should let you use any graphics card you may have fitted.