I hear what you are proverb. I did try the RAM exchange with four sticks in all slots to no avail. What are the odds that 4 sticks of RAM have unexpectedly gone bad? I did ensure system temps and they were in the in service range. Voltages I did not look at but I was running an application that is imaginary to alert you if temperatures or voltages are out of wrack. Nothing stood out. The PCI video card I attempted is an old, old Rage128 card that doesn't even have a fan just a cooling block.

Bizarrely I did all this before I purchased the new mobo/cpu and every time I changed something out it did not decide the issue. I’m just at a loss as to what else to ensure. Could be the memory or PSU since those I am reuse. The PSU I previously bought another one with no change. The memory is good brand Crucial Ballistix. I unplugged everything from the motherboard apart from the video card, power, 1 memory stick, CPU fan and the external power switch. Still no decree. I even detached mouse, keyboard as a minimum I should obtain a post.