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It seems you have a 3TB partition.
Install gdisk. (You can get it from synaptic or http://www.rodsbooks.com/gdisk/)
Then run "sudo gdisk /dev/sda"
Perhaps you should also have a bios_grub...

Install dconf-editor and proceed as suggested here: http://askubuntu.com/questions/125765/how-do-i-add-minimize-maximize-buttons-to-gnome-shell-windows

Try this: http://askubuntu.com/questions/95266/how-to-connect-to-internet-from-recovery-mode

Have you try TeamViewer?
For puppy ypu can find it here: http://puppylinux.org/wikka/TeamViewer

Already answered:

http://askubuntu.com/questions/24722/no-sound-after-boot
http://askubuntu.com/questions/24208/how-can-i-automatically-mute-the-volume-at-every-boot

Please, next time try...

Try
sudo rfkill list

Press Enter and insert your password.

Submit the output.

BTW have you installed any network manager (nm-appled, wicd....)?

Open terminal (Ctrl+Alt+Del)
Type nm-connection-editor and press enter
Go to wireless tab
Click on the wireless name you want to delete and press the Delete... button
Press Delete again on the...

Try this:
wget -r -p -e robots=off -U mozilla <URL address>

Try to upload and open it online. http://www.viewdocsonline.com/

I would suggest Universal-USB-Installer. It is for Windows. You can use it to make chaanges permanent to your ubuntu on usb. Anything you install or change will remain on usb.

The latest versions of ubuntu are too heavy. Try an older version (even if it is not supported), like xubuntu 10.04 or even 8.04. Try it with live usb or cd and if it is ok install it. Remove XP.

Hello. i removed some groups recently, but after that there is a message complaining in every boot: udevd[415]: specified group 'video' unknown udevd[415]: specified group 'floppy' unknown ...

Hello. i found this thread http://ubuntuforums.org/showthread.php?t=1315549 about an error reported by system log viewer but it is not solved and is old. i have the same problem: System log viewer...