I was uploading an update a few weeks ago and and it required a reboot. When it rebooted the system crashed. and all I got was a blank screen. After playing with it several times I was able to figure out F12 got me to the boot screen and then it would go into Ubuntu and give me the following options:
Ubuntu,
Advanced Options,
Memory test x386,
Memory test (I don't remember what was in parentheses)
I chose Advanced options and was able to go into 3.13.43 Recovery Mode. That seemed to make everything work ok, except I have no sound. I have all the volume controls right and I even went into alsamixer and found it to look different than the post I found on it. I only have a box with oo in it and below it. I don't have the master controls. My system is a Gigabyte F2A55-HD2 with a AMD A8 6600K processor, 8 GB RAM, and a HDMI 32" HDTV as a monitor. Every time I reboot, I have to repeat the process above. I would just like to wipe the drive and start over, but not sure how. I keep all my files on a personal Seagate cloud on my network so I am not worried about losing anything. Any help is greatly appreciated.
sudo apt-get install dkms