new bios A04, comp now broken, any help please,possible bad motherboard not even 3 months old

Hey all, I flashed my bios a few days ago and system ran good,  now today my system when I turn it on monitor does not come on, I restarted it and same thing.  I unplugged it and swapped out gpu cards to see if it was the card and now when I fire it up the fans run at 100% constantly and my monitor or nothing turns on.  I thing my new motherboard is bad. just swapped it out in the xps 700/720 program.  any suggestions   madbirmy