ChuckMountain, I’m sorry to hear that you are experiencing this kind of issues on your new system.
Please let me know if you are able to access the BIOS? It will be important to check which the current BIOS version is? Then, you can try to install a newer one.
There are customers reporting "not boot issues" when a USB 3.0 is connected to the NUC. You can check the following thread for any additional information D34010WYK does neither boot from USB 3.0 nor boots with plugged USB 3.0 drivehttp://
If the issue persists you can contact and if you need to replace your product, please get in touch with our Warranty Department so they can help you: Contact Support
I have made some progress in the last hour. I actually tried a new HDMI cable after trying the old one with a Sony camera as it didn't work with that. Tried some other memory and did get 3 flashes with that.
I put the original memory back in that is the right spec albeit not on the approved list.
So when I plugged it in the fan comes on "high" speed which I thought was the boot initially. I then pressed the power button which then slowed the fan and would allow me into the bios.
So just managed to install OpenElec on to it but the fan still runs when I power off the unit.
I did try and reset the bios using the yellow jumper so am wondering if it is a setting in the bios I need to re-enable to stop the fan when the NUC is powered off.