How do you mess up a BIOS? I have dead end boot options, now, but I can't say I've managed to brick my Z83-4 Plus, and I've swapped the OS about five times on the eMMC.
Do you honestly need to ask that particular question with your obvious level of experience/knowledge mate lol
??? Put
any device in the hands of an end user & you'd be amazed at the most basic steps some miss or neglect in their configuration, routine care/maintenance, etc. (And, for the sake of specificity, I will also just add that
absolutely nobody is exempt there either lol, we all make the odd mistake with technology from anything as mundane as a cordless handheld vacuum cleaner, to smartphones, to top tier high end PC's.
Or, more to the point, exactly what some end users actually do to their devices to
totally screw them up as well, some examples are utterly & truly mind boggling
. (But, they still actually wonder why their devices will no longer function afterwards too lol!!)
And, whilst not particularly common, BIOSs' can still become corrupted or fail in other ways. (The OP reported a power cut/surge.). Reports of BIOS corruption happening from a power cut during a flash/update are quite common & the effects well known, but a surge could also corrupt a BIOS under the right/wrong circumstances, (depending how you want to look at it lol
.)
Your activities with swapping to different OS's would also have no affect upon the operation or function of the BIOS, it's a pre-boot environment installed on its own separate ROM/chip (as applicable). (Although, I'm sure you're more than aware of that fact too.)
(
@npatao , this doesn't mean you are necessarily included in the above category lol
!! I'm just answering the question previously asked
.)
I have tried with 3 different keyboards (one of them wireless that I already used to access BIOS to update firmware) and It didn´t work. When the keyboard wakes up, the logo it is already frozen.
I guess that there is no solution....
Obviously, things don't sound too good at this stage!! Is your device still under warranty?
If no, would you feel confident enough to remove the baseplate from your Z83-4 & very carefully disconnect the CMOS battery? You'll immediately see it inside the device with the baseplate removed, encased in bright yellow plastic with black & red wires leading to a small white plug/connector. (Obviously, completely disconnect the device from mains power & HDMI etc. before you begin.) Then, simply unplug the battery & leave it for 30 seconds (although to be on the certain side, you could leave it disconnected for 2 to 5 minutes or so). Reconnect the battery afterwards & replace the baseplate. Power on & try accessing the BIOS again. (
NOTE - If the device is still functional but it just required a reset in this way, all current BIOS settings will have been reset back to their defaults or zeroed, as applicable.)
At this point there may be little else you can do anyway, so it's certainly worth a try, (although I have my reservations even this will work in this instance). (See the picture below if it's of any additional use to you. In the bottom left hand corner of the image you can clearly see the battery wrapped in the yellow plastic with the black/red wiring leading to the small plug. (It's that plug that you need to carefully unplug, wait, & re-seat.))
Shout if you have additional questions & let us know if you're still stuck or if a BIOS reset clears the problem.
