OP I waited several minutes and had to reboot with the power button. I know it's not the best way. Why was grub not working after the first restart at installation? It should have been like it was the first time with the Plos and Win7 entries.
The original black screen could have been a number of things, but the two most obvious would be wrong driver for the graphics card, and the use of the quiet
parameter in the boot stanza. I delete the quiet
parameter, and use splash=verbose
so I can see the information the OS is providing to tell me what stage of the boot process the system is currently in. Boot splash screens may be pretty, but they hide all of the important information.
Having shut down with the reset button, it's very possible that the partition filesystem is now corrupted and needs repair, using the fsck -fy /dev/<whatever>
command from a root terminal
prompt using the liveCD
with the proper designation for the partition being checked.