You have a low-level hardware failure.
I assume that your monitor is dark and unresponsive, am I correct? Test it on another computer just to check, that is important.
Unplug & replug all your power and data connectors, including the 24 pin mainboard connector, and any molex connectors.
Try to access the BIOS by tapping the appropriate F-key on boot. I assume that you will not be able to enter the BIOS screen. Result?
Try to enter Safe Mode by tapping the appropriate F-key on boot. Result?
Question: explain how you reset the BIOS?
If you cannot access the BIOS screen, test the power supply (if you can).
> You can swap it with another that you know is good, just to test.
> Use a power supply tester if you have one
> Use a mulitmeter tester if you know how to use one.
If you have a laser mouse, does the light on the bottom glow, or is it dark?
Test all your USB ports; does the thumb drive light up, or is there any indication of activity?
Post back with results to the above steps.
Edited by ranchhand_, 06 August 2016 - 08:14 AM.