Mellperbia

Yes. I've used it for 2 months with the present chip. Before that, this board also worked on other CPUs(5960X and 2603v3)

nope...I bought it 3 years ago, and it just passed warranty.

I've just had an X99 system built with the following specs. CPU: Intel Xeon E5-2678v3 Motherboard: MSI X99A Xpower AC GPU: Nvidia GeForce RTX 2080 Founders Edition RAM: Corsair Dominator Platinum 2666MHz CL15 8GB*4 SSD: Intel DC P3605 1.6TB | Samsung PM961 1TB HDD: WD Blue 1TB CPU Cooler: Thermalright AS120 Plus PSU: EVGA SuperNOVA 1000G2 When I boot up, I've got error code 19-B0-55 on the Debug LED in this order which loop for the whole night and there is no signal to screen. I've tried the following procedures so far Reinstall CPU Install RAM in the recommended and not recommended slots Quad channel does not work at all no matter how I plug them Dual channel can only work on RAM Slot 1/3 and it is working right now but it doesn't work in any other slots Single channel only work when I plug in slot 1 (If I plug into any other slots, the error code will be 19-B0-55-00 and reboot) Clear the CMOS in both A and B BIOS Booting In another BIOS Using Only One stick of RAM in each Slot (both sticks in all slots) According to the manual, 19 is RAM problem and 55 is south bridge's problem. I would be very grateful for any assistance you may be able to offer.

This is very useful, thanks