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sudo lshw -C *-multimedia
A quick google suggests the eMachines E525 has an Intel® Graphics Media Accelerator 4500M with a 15.6" LCD (1366x768).So SeZo is probably correct (as usual) .. is the picture actually being displayed on the laptops screen, but the backlight not working ?(check with a torch)Most suggest kernel mode setting causes the backlight to distinguish and stay off (so adding nomodeset as a kernel boot parameter should work).. others suggest it's caused by the backlight just being very dim.So if the picture IS displayed, we can try the nomodeset kernel boot parameter first .. as it's the easiest option.If you need help adding nomodeset to the kernel boot line (as a single boot test) .. just ask Links for future reference:http://ubuntuforums.org/showthread.php?t=1613132andhttp://ubuntuforums.org/showthread.php?t=1741556&page=4andhttp://linux-on-acer-aspire-5732z.blogspot.co.uk/2011/06/backlight-workaround-for-linux-mint-11.html
quiet splash nomodeset
sudo cp -v /etc/default/grub /etc/default/grub.backup
sudo gedit /etc/default/grub
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