google [gigabyte motherboard beep codes]
https://www.gigabyte.com/Support/FAQ/816
1.AWARD BIOS 1short beep ：System normal
2.AMI BIOS 1 short beep ：Memory Error
BIOS manufacturer may be printed on BIOS ROM chip - do they still have these?
Formatting is THEIR terrible formatting. I have fixed the first few lines so you get the idea.
What does BIOS beep sound mean?
1.AWARD BIOS
1 short beep ：System normal
2 short beep ：CMOS Error
1 long beep and 1 short beep：Memory error
1 long beep and 2 short beep：Graphic card error 1 long beep and 3 short beep ：AGP error 1 long beep and 9 short beep ：Memory Error Continuous long beep ：Memory not correctly installed Continuous short beep ：Power supply unit failed
2.AMI BIOS
1 short beep ：Memory Error
2 short beep：Memory parity check error. 3 short beep ：basic memory 64K address check error 4 short beep ：Real Time Clock malfunction . 5 short beep ：CPU error 6 short beep：Keyboard error 7 short beep ：CPU interruption error 8 short beep：Graphic card error 9 short beep ：Memory error 10 short beep ：CMOS error 11 short beep ：CPU cache memory malfunction
There are often RAM timing settings in the BIOS setup.
If the CMOS reset itself due to battery running down perhaps these settings have been lost?
As I recall some have quite complex settings that are hard to figure out. Rather you than me.