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I have a dell inspiron N5110, with i5, 4Gb ram and nvidia GT525 graphic card.

I installed ubuntu 11.04. It was working fine with unity. Then in additional driver I installed the recommended nvidia drivers. None of the nvidia drivers being used at that moment.

Next I restart to complete the driver installation as mentioned. Now the problem is after I pass the grub screen nothing happens and the caps lock key keeps on blinking.

I even tried to start into recovery mode, there also I'm unable to boot into Linux.

The only thing I can do is boot into linux via previous kernel install of the linux, from the grub menu.

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The GT525M is a nVidia Optimus card, you won't be able to use the driver from Ubuntu out-of-the-box. See also How well do laptops with Nvidia Optimus work?

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.... GT425M or GT525 or both? :) – fossfreedom Sep 13 '11 at 9:55
Both I guess ;) – Lekensteyn Sep 13 '11 at 9:58

I searched a lot, never found a problem and solution for this. Maybe the Nvidia GT525M, is not supported at all.

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