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Maximus V Gene UEFI booting?

HandySam
Level 7
Hello,

With Windows 8 out now I bought it and wanted to install it on my system but I wanted to install it in UEFI to have all the benefits like secure boot and stuff.

My specs:
ASUS Maximus V Gene (UEFI version 1309)
Intel Ivy Bridge i5 3570K
16GB DDR3 1600MHz RAM (2*8GB)
Samsung 830 256GB SSD (latest firmware) (formatted as GPT)
MSI GTX 680 (reference)

So I made a USB with Windows 8 EFI (this works) (formatted as GPT). Then I set my CSM setting to disabled (this is needed to boot in UEFI). The first problem is that apparently my VGA card (GTX 680) is not supported in UEFI mode (???). So I pulled out the card and went on with the integrated HD4000. So now I can boot into my EFI Windows 8 USB installer. Everything seems fine.

The installer copy's everything but then on the first reboot I see the ROG logo a little while and after that a continuous loop of little flashes of my screen going on (which is a black screen anyway it seems) and dark again (same case with the LED's on my keyboard).

So now I'm not able to do anything. (I can restart and change the setting back to normal BIOS but I bought this UEFI board for a reason).

What can I do to fix this problem? Is it normal that a GTX 680 can't boot in UEFI?
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19 REPLIES 19

I have found the problem for the booting with the HD4000. I had set the memory for the iGPU to 1024MB and this was the cause for the strange flickering behavior. I have set it to 256MB (or auto) and that works now but I'm starting to see another problem.

Whenever I start game or GPU benchmark the system completely freezes. This is with the CPU and everything on auto/stock settings in the BIOS.

I've been trying to up the voltage a little bit (for the iGPU, RAM, CPU) but so far this hasn't had any effect. I can play a game but only when the game is limited by vsync or some other sort of fps limiter. As soon as I disable vsync or the fps limiter my system instantly freezes. The same goes for the heaven benchmark.

t3kn33k
Level 10
reseat the cpu and apply new thermal paste , check for bent socket pins , use a good cpu cooler , set igpu mem to auto , check your connections both power and data

flash bios to 1309 then reset cmos , load optimal settings , then add your own prefs , enable uefi win boot , check uefi win file

Secure boot requires firmware that supports UEFI v2.3.1 Errata B and has the Microsoft Windows Certification Authority in the UEFI signature database .... which i found from the win8 upgrade adviser prog my vg not compatible ?

HandySam
Level 7
So I did some more tests.

BIOS is 1309 (as stated in FP) I have changed the RAM (booted with 1 stick, in different slots, took other RAM (from other PC)) Still the same problem. I have tested every option in the BIOS for voltage of iGPU, CPU, DRAM... (set it @ 1,2V max, RAM: 1,65v) I've tried different allocations of RAM for the iGPU, I disabled Render standby... (I tried everything) (most of the time I tested everything on default (everything should work then right?))

I was able to point the problem to vsync. Whenever a game or benchmark uses vsync there is no problem but as soon as I disable vsync the complete system freezes.

I'm going to test my CPU in another PC to see if it is my CPU or the motherboard. With vsync enabled, it can take any load but as soon something is without vsync the complete system freezes. This is weird. Is this a know issue?

I have a MacBook Air 13", It also has a HD4000 but it can run everything without problems even with vsync disabled. This is under bootcamp Windows 8 Pro x64 (same drivers, same OS as my desktop).

I´m having the same issue of VGA card not supported for EFI.

I own a Radeon 6970.

So I can assume that is impossible to have a EFI Secure Boot Windows 8 installed while using this card?

t3kn33k
Level 10
have you installed all the intel drivers and utilities etc

fixed , if your on raid wipe it clean via ctrl i and start new array , clear cmos , setup your bios prefs , enable uefi win with standard ,in bios boot menu set compatibility to both with legacy which just gives you the option for all devices, then have your fat32 bootable win 8 usb drive in the slot ,f10 save and reboot, f8 on boot , choose uefi usb stick, format drive in win8 to get four partitions , install on the fourth partition , worked for me , peace , using chrome avg 2013 , installing bf3 now , cheers

legacy for pcie

must have legacy enabled as this is your backward compatability

Did you reach success even using an pci-e vga card or using the internal one?

I'm using the integrated HD4000 now. But this is the one that gives me troubles.

For people with a discrete GPU:

I can boot in UEFI with PCIe devices on UEFI first setting. Windows 8 secure boot is off (other OS).

CSM setting (enabled):

storage, and one other option are both ignore.
Bootdevice UEFI only
PCIe UEFI first

This works for booting UEFI.

But I'm struggling with this vsync issue on my HD4000. I've tracked down the issue to the motherboard. I've tested the CPU in another system and works fine there.

So I'm probably going to RMA my motherboard.

http://www.youtube.com/watch?v=7jw58OOvEyg&feature=plcp

my understanding is that only selecting uefi you are asking for the security codes to be processed by the bios , i haven't heard of oems producing secrete codes in there hardware as yet , as i noticed when i only slected uefi it would give the graphics card error and revert to uefi and legacy with legacy first i was able to get my non coded hardware to be recognised and uefi as secondary , remember this is a matx board and we are lucky to have uefi as an option , i have been running bf3 on windows 8 enterprise evaluation for two days solid with all drivers perfectly , check my vid

so uefi has to have codes to go buy being a matx board full functionality is limited , in the future we will see bigger sized bios roms to accept all uefi functionality , so for now legacy enables your non uefi equipment first as this is the main infrastructure of your pc followed uefi second , this doesn't mean your not secure its just the way the small bios has to deal with equipment both software and hardware , what is important is the bios accepting the uefi codes to enable security , and this is shown when you see the bios rog logo booting to windows with the windows dot clock rotating under it , thus you are booting with uefi bios security into windows .