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So as per my title I am trying to install the 64 bit version on my PC .The processor is Intel core 2 duo T5250 .On trying to boot from the USB the screen displays "boot error" once it didisplayed something about kernel error or something (I didn't quite get it) . but I've ran windows 7 64 bit on the same PC so it shouldn't have been a problem . currently I have 32 bit Ubuntu on the system .is it interfering? I really need to run the 64 bit ( specific apps)

P.S. The CPU architecture is i686 but the op mode is both 32 and 64 bit

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There may be a problem with the LiveUSB you are using. Check the integrity of the downloaded ISO file. Check that you can boot another computer from the same USB. –  user68186 Dec 20 '13 at 19:26
nootryingtolearn - if it was indeed yourself trying to respond via an answer - you appear to have multiple accounts. Please register one of these accounts. Then click the contact-us link at the bottom of this page and request that your accounts are merged. Once done, you will then be able to edit your question with further information. Thanks. –  fossfreedom Dec 21 '13 at 11:23

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