I know I'm reviving a zombie topic, but did you ever get your bios working again? I bought a GA402RK online that's exhibiting the same symptoms. When attempting to power on, the HDD blinks once then waits about 5-8 seconds, then blinks again and just loops like this. It doesn't matter if it's plugged in to wall power or running off of battery. I tried disconnecting all peripherals and the SSD to see if it acts differently but it doesn't. Any advice or help would be greatly appreciated!...

Hey, all!
Electronics repair is a hobby of mine and I'm a huge fan of the right to repair. Thank you for all of the information and help that you have available