This question already has an answer here:
I'm attempting to install Ubuntu (I've tried 16.04, 17.10 and 18.04 daily build). Each time I encounter an error when the image is booting, something along the lines of TSC_DEADLINE error, update microcode. I've read some people have had success with updating their motherboard bios but this didn't help me, unfortunately. Other solutions appear to be related to those who already have Ubuntu installed.
Is there a way to alter the iso with the new microcode before installation?
Thanks for any help.