Dell Black Screen w/logo at start-up can't go beyond

Hi;
I have a Dell XPS 8700 this is the second time this has happened I get a Black screen with the Dell logo at start-up, and the computer won't go beyond this.
Pressing F12 don't do anything, I can't get into BIOS.

The first time they replaced the Main Logic board, It worked for a month what methods are available to fix this issue?
Is there a corrected Main Logic Board available?

Dell XPS 8700 build date: 9/2015
Thanks;

EnriqueZ

'Happy George Windowsten's Day'!

to get into the BOIS it is F2, F12 is for boot menu

You have a hardware problem. Unplug any external USB devices other then keyboard and mouse.
If you still can't start, shut down computer, take off side, unplug all unnecessary Hardware (ie) HDD, CD rom drive etc. As mentioned, restart and press F2 to enter Setup (Bios) If that works, shut down and plug in CD drive and restart. If that works, shut down and plug in HDD, if anyone device keeps the computer from booting, then that is the bad device. If you can get into the Bios with the HDD attached, but no further, restart and press F12 and do the Diagnostics.