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Z77 extreme 4 error A2 & A6

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May 30, 2012 10:01:50 PM

Hello, This is my first time building a computer so hopefully this is something easy to fix. When I first boot up the computer the error code A2 comes up, but when I hit delete and enter the UEFI screen the error code A6 comes up
a2 = IDE detect
a6= SCSI detect

Im not quite sure what either of these mean to be honest, Ive been looking around a lot and this doesnt seem to be a very big problem as there isnt much around on it. I have tried reseating the graphics card, taking ram in and out, setting HDD and SDD to the correct settings. trying different ports for the HDD and SDD. Im not sure what else to try if anyone can help me out that'd be greatly appreciated.

More about : z77 extreme error

a c 118 V Motherboard
May 31, 2012 2:37:57 AM

check the user manual page 36 on sata settings,is see one as a ide drive and the other as a scsi your os should be the first detect try it alone then add the other in the following slot
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May 31, 2012 2:48:05 AM

Im sorry Im not quite sure what your recommending I should do? I tried using both the serial ATA 2 ports and the serial ATA 3 ports neither of those changed anything.
a c 118 V Motherboard
May 31, 2012 2:58:04 AM

your os is on the sdd then use first sata port do not connect the other drive now andd see how the bios will detect it
May 31, 2012 3:14:33 AM

I dont have my OS installed yet but when i do i will try that
a c 118 V Motherboard
May 31, 2012 6:45:42 PM

that will help
a b V Motherboard
May 31, 2012 7:04:47 PM

Probably not related to your issue, but have you flashed the SSD to the latest firmware on a different PC? Best to do that before you install the OS - some won't allow a boot drive flash.

Also, did you set the SATA to AHCI?
May 31, 2012 7:11:02 PM

yes the SATA is set to AHCI, and I have not flashed the SSD to the latest firmware, im not quite sure how I can do that I dont have another desktop available, only a laptop
December 30, 2012 3:09:02 PM

I know it may be late but I’m replying in hopes to help anybody else with this issue. I had the same problem and was able to solve it.

The new “build”Scenario:

After a clean install of Windows 7 and upgrading to Windows 8 using on board graphics (updated drivers, latest bios, etc.), I had no problems what so ever until I installed my 480GTX..

The problem:

When booting Windows 8 would crash and detect a problem after screen post the “touch screen” desktop. It would then freeze. I even tried to set the PCI-E as priority for graphics in bios. When I removed the card and placed everything back to on the onboard GPU everything worked fine again. I even tried my old 8800GTS…..same problem.

The fix:

Uninstall the driver “Lucid Virtu MVP Ver:2.1.119” or don’t install the driver at all while installing other drivers, reboot. It worked for me and was able to use my 480GTX. It did help my 8800GTS (even with Nvidia driver) but I believe the card was going bad in the first place. I did not try to reinstall after everything worked properly.

I hope this helps.


The Build:

PSU…Corsair 650
CPU…2700k (mild 4.2 overclock)
Heatsink…Corsiar H100
Motherboard…Asrock extreme 4 Z77
SSD…OCZ Vertex 3 120
HD…Seagate 3TB 7200
Case…Antec 900 with mod to mount H100 on top of case.
GPU…GTX 480



May 28, 2013 2:17:45 PM

blackburn72419 said:
I dont have my OS installed yet but when i do i will try that


scout_03 said:
that will help


J_E_D_70 said:
Probably not related to your issue, but have you flashed the SSD to the latest firmware on a different PC? Best to do that before you install the OS - some won't allow a boot drive flash.

Also, did you set the SATA to AHCI?


Hi everyone, I have a ASRock Fatality Z77 Professional -M, with a i5 3570K, GSkill Ripjaws X 4GB x 2 1866Mhz, GTX 460 Video Card, my PC its working well, but sometimes when i turn on again Suddenly i got 5 beeps and the PC dont start. I put off the mem´s and put it back again and it works, but it happen a lot of times, please anyone can help??
!