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I am a newbie here and I am trying to install Ubuntu 12.04.4 Desktop on my college machine which already has dual boot of Red Hat and Windows 7. I want to erase both the existing OS and install just Ubuntu. I am installing it from a DVD that I burnt from the iso image obtained from Ubuntu official site after the 700 MB download.

I am using an USB DVD drive and after pressing F12 I am selecting USB-CDROM for booting. But still the Red Hat version is starting and I can't install Ubuntu. I checked on the other laptop and the disk is burnt correctly as well as the drive is working fine. Don't know whats the problem.

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Can you actually boot a "try out" Ubuntu from this DVD on your other machine? May booting from DVD be disabled on your college machines? – Takkat Feb 24 '14 at 12:11
nope its not.. anyways I am trying to update my bios now – apps92 Feb 25 '14 at 4:44

If the drive and disk itself are in working order, which they are since you have tried them on the other PC, then the problem lies in the boot options of the target PC.

Looks like the BIOS and the external DVD drive do not like each other. Try upgrading your BIOS (flashing), or another boot media like USB flash memory.

Search the Internet for answers in regards to your PC (motherboard) make and model - this is not a Ubuntu related problem.

Start here.

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Thanks will try that too..! – apps92 Feb 25 '14 at 4:43
Please come back and let us know what happened. – mbiber Feb 25 '14 at 11:53
Looks like the problem was with the new RAM that I had upgraded. Just removed the extra RAM from its slot and that did the trick. Must be the problem of frequency matching I guess. – apps92 Mar 20 '14 at 10:29
Glad you resolved your issue. Looks like it wasn't Ubuntu related like i suggested in answer. I'm guessing vote up is in order ;) – mbiber Mar 20 '14 at 15:52
sorry but I don't have the experience points that I can vote up.. I am a complete newbie.. once I reach 15 I will definitely do that.. thanks :) – apps92 Mar 20 '14 at 16:58

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