I have an HP Mini 210-1040NR that previously ran Windows 7 Starter. Because of extreme lag I downloaded and installed Ubuntu 14.04.1 and installed from a USB drive made by pendrivelinux. First, I used the demo and installed the driver that came from some source file. It ran nicely and I successfully connected to the internet. I installed Ubuntu, but then the wifi driver vanished. I edited my settings in Software and Updates to match that of the Live Demo's, and the driver appeared. However, when I attempted to install it, I got about 10% through, then it stopped and I eventually had to cancel it.

My Wireless driver is, according to feedback from the

$ lspci -nn -d 14e4

Broadcom Corporation BCM4312 802.11b/g LP-PHY [14e4:4315] (rev 01)

It would be really helpful if the driver or whatever I need to fix this was downloadable from any OS, because I don't have any access to ethernet. If it's the only way though, I might be able to find a way.