Unseat and firmly reseat your 24-pin cable to the motherboard and the PSU. Same for the 8-pin cable as well (they both are required connections). There's not much information in your post, but to me it sounds like a power delivery issue. Ensure you connected your video card power cable(s) correctly too.
>> Ensure you connected your video card power cable< Yes. That was surely one of my problems. I fixed that. Now I'm at error AA, "Ensure you connected your video card power cable". I'm using an Asus Strix Director II. I have the following connections to the Video Card: 3 Pin, 4
Also, when I am stopped at Code AA my PCIex16 Lane Switch lights have two blocks of light, page 1.3 of manual, Upper block light4 is stead on. Lower block 1-2-3-4 light are stead on.
Is there a way to check the memory, motherboard an cpu, seperatly?
My System Rampage V Edition 10 - LGA 2011-v3 Socket Intel i7 XC-Series Processor Chipset: Intel X99 Memory: g.Skill TridentZ DDR4-3333 CL16-18-38, 1.35V F4-3333C16Q2-128GTZKW Samsung M.2: V-NAMD SSD 512gb (8 Sticks) Power Supply: Corsair HX860i DVD: Asus BW-16D1HT/BLK/G/AS Seagate 1-12TB BarraCuda Pro Seagate 1-4TB BarraCuda Pro Asus Monitors: 32 Inch, 29 Inch, 29 Inch
As yet I have not installed the operating system but it will be Windows 10 Pro. Bob