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.