the command 'sudo grub-install --uefi-secure-boot' was entered into the terminal it said it had finished with no errors the computer was then shut down and restarted, the boot was changed to secure boot, again I got a blank screen, I then restarted the computer and hit f12 to access the boot menu, selected ubuntu (which boot 1st automatically because it is at the top of the boot list) and received the same screen that states access denied (which I sent you a pic of previously). So I turned the secure boot off, once again and booted to ubuntu, then entered in the 'sudo efibootmgr-v' command into the terminal and got lucille@lucille-Inspiron-7720:~$ sudo sudo efibootmgr -v [sudo] password for lucille: BootCurrent: 000C Timeout: 0 seconds BootOrder: 000C,0000,0001,0002,0003,0004,0005,0006,0007,000B,0009,000A,0008,000E,000F Boot0000 Setup Boot0001 Boot Menu Boot0002* Removable Drive 030a2400d23878bc820f604d8316c068ee79d25b20699b27e1a34f488e97534d40523c1d Boot0003* Hard Drive 030a2400d23878bc820f604d8316c068ee79d25bf5b01cc8ce8e9841b3a8fb94b6dfefee Boot0004* USB Storage Device 030a2400d23878bc820f604d8316c068ee79d25b6895f49a99882e4bb0da03ec784d2828 Boot0005* CD/DVD/CD-RW Drive 030a2400d23878bc820f604d8316c068ee79d25b3750dce1249e1748876bee5d3f25ebfb Boot0006* Second Hard Drive 030a2400d23878bc820f604d8316c068ee79d25b293b8046e622c74ebd287431e0c56179 Boot0007* Network 030a2400d23878bc820f604d8316c068ee79d25b6567de8ee595634d842b325e6a43510b Boot0008* Network Boot 030a2400d23878bc820f604d8316c068ee79d25b1b7f7356e3475744a9a6ed8e91832083 Boot0009 Diagnostics Boot000A Change boot mode setting Boot000B* Windows Boot Manager HD(1,800,fa000,7d58b232-1c76-4fcc-a696-4c6b951a7612)File(\EFI\Microsoft\Boot\bootmgfw.efi)WINDOWS.........x...B.C.D.O.B.J.E.C.T.=.{.9.d.e.a.8.6.2.c.-.5.c.d.d.-.4.e.7.0.-.a.c.c.1.-.f.3.2.b.3.4.4.d.4.7.9.5.}...a................ Boot000C* ubuntu HD(1,800,5d21800,1bbce1c1-4706-4196-a31f-ff245bddffed)File(\EFI\ubuntu\grubx64.efi) Boot000E* dvd boot ACPI(a0341d0,0)PCI(1f,2)03120a00030000000000CD-ROM(1,8d4,29c8ad)File(EFI\BOOT\BOOTX64.EFI) Boot000F* UShe B ACPI(a0341d0,0)PCI(1d,0)USB(0,0)USB(3,0)0311050000HD(1,800,5b4800,e8ac336c-d14c-4ca2-8154-5a790a5df7ea)File(EFI\Boot\bootx64.efi) lucille@lucille-Inspiron-7720:~$ ^C lucille@lucille-Inspiron-7720:~$ I believe this still states that the boot is grub and not shim anyway I still can not boot in secure mode I appreciate you help, but I still need more thanks On Thu, Apr 18, 2013 at 7:22 PM, Steve Langasek <