Ubuntu 14.04 Интернет LTS stopped detecting only my

Hello and thanks in advance for any help.

Last night Ubuntu asked я to update, which I allowed. This morning, I woke up and turned on my computer, and it didn't allow я to connect to the Интернет. I checked the networks detected and it showed в bunch of them, but not заминировал. Интернет All the other computers and phones connect normally to the, through wireless and through кабель. Only the laptop with Интернет Ubuntu stopped recognizing only my, which I had already configured. It also came to my attention that в power outage had occured during this night, so гm not sure if the update broke it or not. Yet again, thanks in advance :)

Edit: My laptop is к Acer Стремился 5820TG, which used to be able to connect to the Интернет until today. I хан connect to the Интернет through wired connection, the problem only occurs when I try to connect through wireless. гm sorry if you can't fully understand what гm saying, I just woke up, so my English is dreadful. Here is the relevant output of lspci:

02:00.0 Ethernet controller: Qualcomm Atheros AR8151 v1.0 Gigabit Ethernet (rev c0)
03:00.0 Network controller: Broadcom Corporation BCM43225 802.11b/g/n (rev 01)