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Broke my Fedora 24! Boot hangs up after resetting my forgotten root password.

Hi! Please help!

As stated in the "question" my Fedora gets hung up and won't open the desktop. I type my volume encryption password and everything gets going... but when I look at the processes (typing F10 as it's going) I can see that it stops here with this message:

"[27.(some other numbers)] sp 5100_tco: I/O address 0x0cd6 already in use" "[30.(some more numbers)] kvm: disabled by bios"

Next it does a few more things that are still somewhat of a mystery to me, but which it confirms are "OK" (in green) and finally stops here with the following output:

"A start job is running for Wait for Plymouth Boot Screen to Quit ( (we see a running time clock here and) / no limit)"

My Fedora was running "fine" before this attempt to change my forgotten root password. I used the advice I found here about how to do that. When I did not use "plymouth..." the first time I tried WITHOUT the plymouth entry, I got this result:

"[ 2.662650] Failed to find cpu0 device node"
At this point (as with the above sticking point) all further efforts to interact with my machine, except for Ctrl-Alt-Del were in vain. :(

Though I am learning bit by bit, I am still quite green with Linux and find many ways to frustrate myself daily... but I expect for many others here, this is all makes sense and is an easy problem. So I thank you in advance for taking the time to help a noob like me with this.

Much Love, Fen