Hi,
I am using Dell vostro 1550. I had dual booted ubuntu 14.04 LTS with Windows 7 a few weeks back. Every thing was working fine but suddenly my laptop's wifi LED is not lightning up in ubuntu. But it lights up in windows 7. There are no answers in askubuntu.com for this question.
Should I reinstall the whole ubuntu OS or just switch to older/version of ubuntu?. Or is there any solution to this problem without going for such a big headache?
Thank you