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I need your help:

  1. I installed Ubuntu 12.04 on my computer (I removed the complete system and installed Ubuntu instead)
  2. It said that the bootloader installation failed. So I chose the only partition that existed again.
  3. Installation succesful. Restart your computer. I did this.
  4. Then it went black when it rebooted (only a flickering stroke appears).
  5. No ISOs are executable.
  6. BIOS > Boot Device Priority says: 1st Boot Device [SATA:PM-SAMSUNG HM] That was all I can say, please help me!
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Can you boot with the Ubuntu live CD or USB in a live session(try Ubuntu option)? If you can then please provide the output of the command sudo fdisk -l. – Samik Jun 6 '12 at 15:53
No, sadly I can't: It doesn't boot at all. – Feratile Jun 6 '12 at 15:59
Assuming you are trying to boot from CD enter BIOS settings and look for Boot/Boot device priority option and then choose your CD drive as first boot device. Or alternateively you and press F12 when computer starts and choose your boot device as CD/DVD drive. You have to burn the .iso file to a CD/DVD first if you have not done it yet. – Samik Jun 6 '12 at 16:07
Your first boot device is set to hard-disk, change it to CD/DVD drive – Samik Jun 6 '12 at 16:16
@Samik: Thank you! It worked with F12! I'm glad that the community has members like you, Samik! If I could, I would vote you up hundred times. – Feratile Jun 6 '12 at 16:17
up vote 3 down vote accepted

Boot into BIOS first to find out from which device the machine trys to boot. Then boot from CD or USB again to check what is on the HD.

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