Satellite L550-13u has no access to the internet

Hello

I have my laptop for a year and last week I had a problem, the laptop had no access to the internet but my other laptop (acer) had internet access.
My brother has solved the problem. And it's happening again now, and it isn't here...
This is why I post here. So I think it's a problem of the realtek software, or could you give your ideas and solutions if you had the same problem please.
(I am a student and I need connection because I was about to download ubuntu packages to learn to use developers files).

Note: My laptop has been 32-bit of windows 7 and Ubuntu 10.10 Maverick 32-bit; just to give you the info on the laptop.

You use the local network Ethernet or wireless?

You have disabled your firewall?

Have you tried another browser like Firefox?

The Internet don't miss to connect both on Windows and Linux?

You have the latest version of the BIOS installed and configured the default settings?

Tags: Toshiba

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