Okay i think i know the problem..
i tried install memory 1x4GB, the port DDR3_A1 work fine can boot, but port DDR3_B1 won't boot and tried install different memory still same won't boot.
so how can...

8 GB (3,67 GB Usable)
256 mb shared

Hello, i tried to fix that problem with
- Switch RAM from the port
- Msconfig Checked Maximum Memory
- No Paging file
- Clear CMOS
- Update Bios
- Clean the yellow ram with rubber

and still...