Grub does not boot Windows 8

[abstractmind0]

Greetings! Recently i've installed Ubuntu on my laptop with pre-installed Windows 8. Initially grub couldn't see windows at all, so i uset guide from this thread (http://ubuntuforums.org/showthread.php?t=2085530) posted by oldfred. Now windows 8 appears at grub os selection list, but when i choose it, grub screen reloads and nothing happens. Whei i tried to run the same command from grub terminal, i got this message: (https://www.dropbox.com/s/prl2338wo64416q/IMAG0461.jpg). Can comeone tell me what's the problem with, and how to solve it? Thanks.

p.s. Sorry for bad English, it's not my native language.

[fantab]

Use Boot-Repair (https://help.ubuntu.com/community/Boot-Repair) from Ubuntu DVD/USB to generate 'BootInfo Summary', note down the LINK it creates and post the link here.

Also share more details of your machine.. like hardware specs.

[abstractmind0]

Here is the summary http://paste.ubuntu.com/6540409/.

What exactly specs are needed? The laptop is Samsung NP530U3C, the motherboard model is NP530U3C-A0FRU, CPU is Intel Core i3 1.8gHz, 500gb sata HDD, I don't think, other specs are needed in this case.

[fantab]

Recommended-Repair
This setting would reinstall the grub-efi-amd64-signed of sda5, using the following options: sda2/boot/efi,
Additional repair would be performed: unhide-bootmenu-10s fix-windows-boot

Run the 'Recommended option' in Boot-repair, that should fix the windows booting issue for you.

[abstractmind0]

That indeed has fixed the issue. Thanks a lot!

[fantab]

Great.
You can additionally download bootinfoscript (http://bootinfoscript.sourceforge.net/), run it and save the boot-info file (like bootinfo-summary from Boot-Repair)o file safely.
If something were to go wrong you will have boot information for working ubuntu boot and you can use to fix issues with boot in future.