Black screen with cursur dash during initial boot.

Now I searched and found a long list of cures for the problem that none panned out to correct the problem. My system is listed so you can see what it is. The problem apears to be unique to the MB and the 2504 BIOS falsh. No I have not reflashed to return to earlier BIOS dates, that is sort of a last resort as I don't want to chance losing the MB. Flashing the BIOS still scares the heck out of me and it might actually is what caused the problem as this is a fairly new set up. And clearly this has been a common problem among many people. It has been posted in the forum from years ago and why it's being reposted now as I was not able to find current posts on it so I appolagize if has been but I missed it. To add on it, I used the MSI 990FX Gaming MB that was used from the replacement for this ASUS MB and it does not have the same problem. The fresh install on the ASUS still showed the same results. Can't believe it's a windows issue or a SSHD, as I have a Firecuda that was disconnected and still with all the drives separated it still does this problem. For now I just put the PC to sleep so when it wakes up I don't have the reboot issue and actually that is OK. But it bugs me as to what the problem is! Memory has been tested one stick at a time with no cure. Tried the Logitech thing using USB devices and still the same issue. This from Nvidia CP might be of some help as it just doesn't appear normal. No I have not tried changing the video card or driver change as of yet. Thought it would be smarter to ask if anyone has seen this issue?

Asus motherboard has the problem, but the MSI motherboard doesn't?
If so, what components are the same between the 2 setups?
A fresh install of Windows tends to rule out Windows as a cause - and, if you didn't install any 3rd party stuff, then that also tends to rule out 3rd party software (which, in total, tends to rule out software as a cause).

So, it's most likely a hardware issue. Now it's just a matter of ruling out the different components. Have a look at this procedure for troubleshooting hardware in depth (although it's older, it's still appropriate for this situation): Hardware Stripdown Troubleshooting

EDIT: Actually, if you didn't have the problem with the MSI, then the components that were used in both setups are likely to be OK. In that case, it's either the components that weren't the same - with the motherboard being on top of the list!

There are no PC components the same. One is an AM3+ while the problem one is an AM4. Completely different in every way. Basically the one that works is exactly like my son's build as that was my old PC that I have built with the REVO drive that also had the same problem on the ASUS MB. Which tells me it is a MB issue.

You're most likely right. I'd check on RMA'ing the mobo if it's still under warranty.
That way you wouldn't have to pay for a new one.
Good luck!

FYI - here's an older page with suggestions on how to troubleshoot by stripping the mobo down. Even though it's old, it's still generally valid: Hardware Stripdown Troubleshooting