Try Removing COMOS Battery for 5 min. than put battery back in and try again to get in BIOS the up date might have changed your boot order so it can find OS./ P/s Unplug computer while removing battery.
I am having the exact problem. Are you able to solve your problem? If yes, can you help me as well? Thanks
I ran into this the other day after doing a BIOS up date .Before the up date I had my sys set to AHCI for my SSD after the up date it would not boot and BSOD . So I restarted and found in BIOS it had set everything back to default ?? I Had a lot of custom settings Overclocking and such , Anyway the main problem is it set the HD to IDE insteed of AHCI so I changed it back to AHCI and Bingo everything is good now . So moral of the story is after doing a BIOS update when you restart First go into BIOS make sure the new ver. is there than check all settings you had before the up date.
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Try method given by alexthesplendidfrench at https://communities.intel.com/thread/6078?start=15&tstart=0
Well Guys, I think I am a new member of this unfortunate club of the DG33TL owners who had the bad idea to update the bios of his motherboard. Anyway, I FINALLY managed to solve the problem. So you got the ugly black screen with the top left cursor. OK, so you maybe want to do that
1/Turn off the comp, unplug the alimentation, remove temporairely all the unecessary peripherals.
2/Put the jumper bios in position 2-3
3/Turn on the comp and go into the bios menu, desactivate the core multiplexing technology (it's for just a moment), save your options and turn off the comp.
4/Put the bios jumper in position 1-2, turn on the comp, you can go now in the bios menu, then load the optimal settings of the bios, save that, and reboot, the core multiplexing technology is activated again, but the black screen is forgotten, you can go to the bios menu normally to customize it for your needs.
5/Replace your peripherals, and yeah, your OS boots normally again.