Hooray! The latest bios 0045 for my motherboard DZ77GA-70K solved UEFI boot issue. I am now running Windows 8 in UEFI mode. Everything works great so far. My chassis front USB 3 port is working too.
Before i updated to the new bios i loaded defaults first. Don't know why its not working for you. Maybe you are doing something wrong or the new bios for your board is also broken. Maybe it is about HDD. I have 2 x 120 GB Intel SSD's
Only issue i have so far is IDU does not work properly on Windows 8. I click to open it but it complains that it is already running and in task bar i don't see it but i do see it is running in task manager but i cant switch to it.
I don't even have missing driver on "PCI Simple Communications Controller" in device manager. I am happy now.
Edit: Here is how it looks for me.
Edit: I also enabled fast boot and it works well too.
I see the second picture, but can't see "Windows Boot Manager" in the Boot Priority list. Can you change the boot order of "Windows Boot Manager"? In my board, not a Visual Bios, but also can't change the boot order, i think it's a big problem. This means the bios need to fix bug again and again.
May be this bios(0075) is not complete devdeloped, they just release this to meet our need. May be the date 5.21 is not a type error. The prior bios version 0053 -> 0062 -> 0071, everytime plus 9, but 0075, just plus 4. Maybe after 5.21's version, they encountered a big problem and still struggling with that, so they release the 5.21 version : )
Thanks for posting a screenshot of your boot devices dislikeyou, it helped figure out why I wasn't able to UEFI boot with the latest 0075 BIOS when others could do so.
With the 0062 BIOS, this is the screen I get when I hit F10 at startup. Note the UEFI prefix to the SSD.
With the 0075 BIOS, this is how the F10 boot screen appears. Note how the UEFI prefix disappears:
I could not boot off the 0075 BIOS with this configuration. If I flashed back to 0062, everything worked again. So what was different from the other people who reported it worked? Well, compared to dislikeyou's screenshot above, I noticed that I do not have an entry for Windows Boot Manager in the F10 boot menu. hmm.
After some searching, I came across a few posts recommending people use bcdboot when they encountered boot issues so I gave it a shot. I booted up a flash drive with Windows installation media, making sure to use the F10 boot menu to boot it in UEFI mode. Next, I used shift f10 to open up the command prompt. From the command prompt, I ran the command "bcdboot C:\Windows" to rebuild all the boot environment files. This TechNet article explains how the bcdboot utility works for those curious.
After running the utility and rebooting, this is how the F10 boot menu now looks:
With the Windows Boot Manager entry added, I was able to boot off the SSD and get to the Windows loading screen! However, for some reason I was not able to successfully boot into Windows. The loading screen would progress for a bit then crash and restart. Booting into safe mode worked however and once I restarted, Windows loaded normally again.
I am not sure if all this work was worth the frustration, but I now have UEFI booting running on my DH77EB board. I hope this helps anyone else experiencing this issue.
Add a entry just like "Windows Boot Manager" or "Ubuntu" are the 'normal' boot method in UEFI system. In UEFI bios thers is a place in NVRAM called BCD(boot configuration data) to store the these boot items. By the help of some tools(In windows, it is bcdedit; In linux, it is efibootmgr; In UEFI shell, it is bcfg), we can add/delete a boot item or chang orders of them. For example, if we install a 64bit win7, at the end of installtion, the install program will use bcdedit to add a boot items which is named "Windows Boot Manager". We can boot win7 from this boot item. If we install linux just like ubuntu or fedora, they also add their boot items.
In 0053 version, DH77EB can use these tools add/delete these items, but can't change order whether in bios config menu or use these tools. In 0062 and 0071, we can't add a item to bcd. In 0075, we can only add win7's boot item called "Windows Boot Manager" and keep it exist. Only if we always connect a usb disk to the pc, the linux boot item just like "Ubuntu" is exist, if no usb disk connected, the boot item "Ubuntu" disappeared. And the 0075 also can't change order in bios menu.
If you are using win7, it's all ok ,don't need usb disk.
I means if install other uefi system such as ubuntu linux, must connect a usb disk to keep the boot item.
You can google how to use uefi shell. With that you can boot to you exits installed win7. When win7 boot successful, "Windows Boot Manager" will automatic added.
If you think it's difficult, just reinstall you win7 in uefi mode.