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Have you tried customer support? "http://www.intel.com/p/en_US/support/" After you run thru the options you will come to this web page.
- Update the BIOS on your computer only if the newer BIOS version specifically solves a problem you have. We do not recommend BIOS updates for computers that do not need it. You can view all new BIOS fixes in the release notes.
I haven't updated my NUC BIOS and it seems to work A OK.
It sounds like maybe USB Optimization is enabled in BIOS - this would prevent any USB keyboard activity until after POST is complete. Please see this page for information on how to bypass that: Intel� NUC — Using Fast Boot to reduce boot time.
If that's not the case, is it possible for you to try a different keyboard?
I will try that when I can. Probably this weekend. But why would I be able to hit all the other F options? It's just f7 that doesn't work. I can hit f2 to get into the BIOS.
As for not updating the BIOS I'm not sure why Intel states that but that is contrary to what you should be doing. You should always update your BIOS as it contains stability and security fixes. I'd rather not run into any issues then wait until I run into one.
Also remember I have two of these and I was able to update the BIOS in the other NUC without an issue. Using the same keyboard by the way.
I looked at your intel link and it says there that after powering off the NUC and back on that it resets the USB optimization. I've turned it off quite a few times. I'm not sure if your suggestion will work.
My new D34010WYK suddenly stopped allowing me to push F2 on a wireless keyboard I had been successfully using for several days. I have also had one of two identical USB3 thumbdrives fail in strange and unusual ways, when the other identical drive with identical data on it, works fine.
Try using a direct/wired USB keyboard if you are not already doing so. And or a different USB port on the NUC.
If your first goal is to get the BIOS updated to the latest version, you can try using the Recovery method. It does not require pressing F7. See the instructions here: Intel� NUC Boards and Kits — BIOS Recovery Update Instructions
And, please let me know what make keyboards you've seen the problem with. I'll see if we have any around here to test with.
The BIOS recovery let me update the BIOS. After the update hitting f7 now lets me into the bios update utility. I'm not sure if it's the keyboard because my other NUC didn't have any issues. Both NUC's was on the same 017 bios version. I'm thinking it was some kind of BIOS corruption. I'm betting any keyboard wouldn't have worked. It might be related to another issue where hitting F2 doesn't work for some people and you have a KB on that. You might want to look into your BIOS imaging center.
Just so you know lots of people are buying your Intel NUC's for vmware. It's low cost, low space, low power, fast enough and enough memory to work great. All things that a person considers a great home lab.
My suggestion is that you release a vmware ESXi branded NUC for home labs. Up the processor to a quad core. It doesn't need hyper threading. The amount of so-dimms are fine. It'll have two NIC's instead of one. Lose the display ports. We only need 3 USB ports. Internal micro sd card for esxi in place of the internal USB header. I think if you reach that market you will have a monopoly for a little bit until other manufacturers catches on.
Found one reason for F7 appearing to be non-responsive. Apparently, it will silently ignore a USB key under some unknown circumstances. I tried F7 during boot as well as power-on update. The USB key was always silently ignored. I couldn't see anything wrong with that first 4.0GB USB key. I even verified the file contents of the BIO file with md5sum. On a whim, I tried another, older 128MB USB key. That suddenly worked. Again, no clue what was wrong with the first USB key.
NUC6i3SYH. Had BIOS 0042, updated to 0044.