I want to go back to the old bios because whenever i start the PC or wake it from sleep i get loud sound like some big motor was started, it is probably from all the fans in the pc , it lasts 2-3 seconds , so the fans are running faster than normal for a few seconds & may get damaged , i read some where that this caused buy uefi bios & wanted to see if disabling it makes any difference , also when i was installing a SSD in my PC, the bios was only detecting one drive , i had to remove the old drive to install the ssd, again this may only be an issue with uefi & not the old bios .
