According to the part numbers provided for memory, they are fully compatible with the motherboard specifications.
Our recommendation is testing with a BIOS recovery test to the latest version:
Make sure your power supply has at least 450-500 watts.
If the issue persists, test each memory slot individually to narrow the issue and if the problem continues replace the motherboard under warranty. So far, we don't have any reports of a new BIOS version for this motherboard.
Thanks for reply.
The motherboard is not under warranty because it is a product not purchased recently. From previous post understands that the BIOS has been updated to the latest version, but without successfull.
As mentioned in previous message and what you can see from this link
the only memory modules supported: 4GB Kingston and Winchip modules.
The power supply has no problem and the motherboard is not bad because the memory modules with 2GB work very well.
I have now returned memory modules Komputerbay to seller. There is no other option than upgrading my hardware to have more 8GB.
From what you have indicated, you can't rule out bad 4GB memory modules. Try a Corsair quad memory kit from Newegg or Tiger Direct. Or, another manufacturer that indicates they tested the four memory modules as a kit. You should order the memory in a quad kit so you know the manufacturer has tested the four modules together.