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When I boot from DVD drive or USB drive with Ubuntu, it asks me about language which I want to use and then to choose try Ubuntu without installing, install Ubuntu on hard drive, check defects, etc.

But when I select to try Ubuntu without installation, then it takes me to a screen where the Ubuntu boots and keeps on flashing with 5 pointed lights and keeps on flashing and never installs or takes me to other screen. I left my PC over 2 hours and it keeps flashing the 5 pointed lights with Ubuntu logo.

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Is your caps lock button broken? –  jokerdino Oct 21 '12 at 11:28
can you post your PC specs ? graphic cards especially! –  Suhaib Oct 22 '12 at 11:20
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