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I am using a Sony Vaio laptop that originally came with a Windows 8 operating system. I removed it entirely and replaced it with Ubuntu 12.10. It seems to me that the WiFi is temperamental. I can restart my laptop multiple times and have the laptop attempt to connect to the wireless Internet to no avail. Other times, I start the laptop and the wireless connects seamlessly. I have checked to make sure the WiFi password is correct, so I don't think that is the issue.

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These are two very different question. maybe edit to only focus on the fixing of the wireless and leave the 'how to reinstall ubuntu' for another time. Provide more information on what you have tried. Are you doing this always in the same location (with the same SSID around?) There are other ways apart from a reboot to initiate wireless access, have you tried them? –  DrSAR Apr 9 '13 at 4:45
    
Is there any kind of specific task after restart of which this seems to happen ? As if in my case when I accidentally use to let my wireless card on in monitor mode & restart it use to stop working for one or two next restarts –  Arush Salil Apr 9 '13 at 5:13
    
Did you try the solution in this link? –  Alex Apr 9 '13 at 5:54
    
Have you installed drivers or using default ones? What is the rate of connection when you connect? –  Hilmi Erdem KEREN Apr 9 '13 at 21:40
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