My GA99F system was getting krufty and was freezing frequently, so I decided that after 2 years to give it a brain transplant. What really happened was a body & brain transplant.
What I learned in the process of going from the Win 7 (GA99F->Ubuntu 14.04, and then replacing Ubuntu Machine with GA990 Motherboard ->Win 10) to Win 10.
1. To halt a Linux system, there are keys that can easily get its attention: PrtScn (SysReq), Alt, and then a variety of letter keys, but shutdown is ‘o’. VERY USEFUL.
2. To stop the boot process on a GigaByte motherboard, and maybe others, there are two important secrets: 1. connect keyboard DIRECTLY to the MB. 2. press DEL key MULTIPLE times!
I realized that I really like this – playing under the hood. However, it requires patience and joy in learning. If you need a computer in a hurry, or at low cost, this is not the way to go.