This is a very old discussion, but since I experienced the issue with a recovered computer just a few days ago, I believe that it is worth to leave a note here.
I had the same problem with the bios not booting anymore and not even displaying the logo. However, following the suggestions I managed to boot a pendrive with a linux distribution using F9. Once linux is up, the trick is to manually delete the excessive boot entries in /sys/firmware/efi/efivars [and possibly remove also the files dump-* ] Once this is done it is possible to reboot the machine and enter bios setup. (Just a note: do not delete ALL Boot* entries; just the repeated ones or the ones which do not correspond to any existing device; in particular leave an entry to boot off the internal hd and one to boot off usb hd) -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1040557 Title: UEFI boot live-usb bricks SAMSUNG 530U3C,np700z5c laptop Status in Ubuntu CD Images: Fix Released Status in Release Notes for Ubuntu: Fix Released Status in Release Notes for Ubuntu quantal series: Fix Released Status in linux package in Ubuntu: Fix Released Status in linux source package in Oneiric: Fix Released Status in linux source package in Precise: Fix Released Status in linux source package in Quantal: Fix Released Bug description: I cannot provide detailed log massages because laptop is bricked right now. If you have courage to try it select UEFI boot from bios and than try to boot laptop using liveusb (made form Precise Pangolin 12.04.1 amd64). Laptop hangs up in black screen. If you force power-off, after it, laptop wont start. I mean it not event start bios, just black screen no sounds nothing. I filing this report, because i already bricked second laptop. At first i thought it was unrelated issue and laptop was fixed by warranty service (replaced motherboard), but after second time i quite sure. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-cdimage/+bug/1040557/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
