New PC. No OS installed. Retail Windows 10 usb boot loop

I used Rufus. The first download of the iso was indeed corrupted. The second looks good I think. On the usb there is a boot folder, EFI, en-us and sources. Plus auto run and boot manager files

I think I may have created the problem myself though. Before I bought the Windows 10 stick I tried my Windows 7 disc. It would not install at all. Something to do with 7 missing files for Skylake and needing a lot of monkeying around to make it work. I abandoned the idea. I am wondering now if during the failed attempt at Windows 7 it made a partition on the drive
Should I try to wipe the ssd from a different computer?

Wookieschnitzel said:

I used Rufus. The first download of the iso was indeed corrupted. The second looks good I think. On the usb there is a boot folder, EFI, en-us and sources. Plus auto run and boot manager files

That was probably your first mistake. What format is the USB flash drive, NTFS or FAT32? The partition on the flash drive should be FAT32 and it should be marked as active. If it isn't, you have become yet another victim of the overly complicated settings of RUFUS that many people get wrong, which is why I do not recommend anyone use it to make a bootable Windows USB flash drive.

Wookieschnitzel said:

I think I may have created the problem myself though. Before I bought the Windows 10 stick I tried my Windows 7 disc. It would not install at all. Something to do with 7 missing files for Skylake and needing a lot of monkeying around to make it work. I abandoned the idea. I am wondering now if during the failed attempt at Windows 7 it made a partition on the drive
Should I try to wipe the ssd from a different computer?

You can wipe the SSD during the Windows 10 install process, but you must have a properly bootable Windows 10 USB flash drive first with a solid copy of Windows 10 on it.

I would try a Linux Live USB flash drive. That will tell you if it is a hardware problem or if it is a Windows problem.

Now the computer won't even get to the bios screen. It just reboots within seconds. I can't even turn it off unless I hold the power button down for a few seconds

Sounds more and more like a hardware problem.

New problem

Reset CMOS and now computer won't post. Lights on board work, cpu fan spins. No beep. Reboots. Continues on until I hold down the power button for a few seconds.

I have tried removing the battery overnight. I have tried holding the reset button for 10 seconds while holding power button. I have tried turning off with PSU switch holding power button then turn on with PSU switch wait 1 minute try again. All fail
Static wrist band always worn. Power cord always removed before CMOS reset.

I am at a loss. Any help would be greatly appreciated. Thanks.