Hello,
If you can't get to the splash screen to access your BIOS, it is almost always a hardware problem. You might consider connecting a beep code speaker to the front I/O port of you MB, to better identify the offending hardware item.
You might also consider resetting the BIOS to the default setting. That's done after turning off your computer, and unplugging it, by pressing the reset button or shorting out two terminals on the MB for 10 seconds. (listed in the manual)