This is a relatively new one to me and I seem to be having a bit of trouble sorting it out. I have been running Ubuntu 12.04 for a year or so now on my work box with a vm for windows programs that I need to use occasionally. Well with EOL coming up for 12.04 I figured I would try my hand at upgrading(Which I have had terrible luck with in the past) to 14.04. So I popped in a clonezilla disk and an identical HDD to the one that I had, and created a clone on the new disk. Wonderful, my cloned disk boots and has all of my stuff on it, no issues yet. Booting to the clone disk I run through the upgrade which is fairly straight forward it just takes a lot of time. After upgrade my clone disk won't boot giving all sorts of odd file system errors and what not(just like everytime I try to upgrade one distro to the next). No biggy I will just switch back to my original drive and boot back to my known working 12.04. Pull the clone disk with the failed 14.04 on it and throw in my old 12.04 and when I go to boot it computer hangs at a black screen and doesn't post for 30 seconds then boots as normal, except now I have no network. Pop a NIC into my case bam back on the network I am(posting from the tower in question). Now my question did I zap something? I was very careful to be grounded to the case when unhooking and re-hooking things but one can never be perfect. My computer is operating normally in every other aspect it just takes a long time to POST and I no longer have a functional onboard network.
ASUS F1A75-M Pro R2.0
250 GB seagate HDD
450W Rosewill power supply
ASUS DVD/CD reader writer
8GB of G.Skill sniper DDR3 1600
Things I have tried:
Smart and memtest come back clean.
Flashed new BIOS
Replaced Graphics with Identical hardware
Changed and retested ram with Identical hardware
I'm at a loss any help would be appreciated