https://forum.asrock.com/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Wed, 08 Apr 2026 22:51:49 +0000 Fri, 06 Sep 2019 22:33:32 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.04 360 https://forum.asrock.com/RSS_post_feed.asp?TID=12380 https://forum.asrock.com/forum_images/web_wiz_forums_black.png https://forum.asrock.com/ https://forum.asrock.com/forum_posts.asp?TID=12380&PID=67623&title=no-bios-codea2-on-z77-extreme4#67623 Author: Lenny1910
Subject: 12380
Posted: 06 Sep 2019 at 10:33pm

Always check your peripherals before posting ....

It was my display....

Plugged the System to my TV and everything is working fine.]]> Fri, 06 Sep 2019 22:33:32 +0000 https://forum.asrock.com/forum_posts.asp?TID=12380&PID=67623&title=no-bios-codea2-on-z77-extreme4#67623 https://forum.asrock.com/forum_posts.asp?TID=12380&PID=67622&title=no-bios-codea2-on-z77-extreme4#67622 Author: RLGL
Subject: 12380
Posted: 06 Sep 2019 at 9:46pm

From the asrock debug list:
A0 - A7
Problem related to IDE or SATA devices. Please re-install IDE and SATA devices. If the problem still exists, please clear CMOS and try removing all SATA devices

Remove one at a time until the system boots.]]> Fri, 06 Sep 2019 21:46:51 +0000 https://forum.asrock.com/forum_posts.asp?TID=12380&PID=67622&title=no-bios-codea2-on-z77-extreme4#67622 https://forum.asrock.com/forum_posts.asp?TID=12380&PID=67586&title=no-bios-codea2-on-z77-extreme4#67586 Author: Lenny1910
Subject: 12380
Posted: 05 Sep 2019 at 11:40pm

Hi.
I'va some problems with my board. Everything worked well in the past. But then my system wasn't in use for a year or something, because I moved and work and so on....

Recently I put everything back to power and started the system. Nothing happened.
I thought that the CMOS battery was low or empty, so I tried to put in a new one, did a CMOS reset via the button on the back of the Board and everything started and worked well.
I did some driver updates for GPU and Windows Updates and switched off the system.
On the next day I had the same problem with no BIOS, no booting. So I did another CMOS reset and - again - everything worked fine. I searched for the newest BIOS for my board and did a BIOS update. Afterwards the System started like it should for 2 days and I thought that everything is fine now. But since yesterday I've the problem with no BIOS/no boot again. The dr. debugger code where the start procedure stops is A2, which is related to Harddrive Issues.
I tried to boot with and without any HDD. I tried to boot with just one of my 3 HDDs with every single one. Nothing changed.
So I tried to put the Memory on the other channel, nothing. I tried to boot with just one Memory on every slot, nothing.
I removed the GPU, nothing. I removed all Case-USB-Connectors, nothing. I tried to reset the CMOS countless times via Jumper, Button an Battery removal. Nothing changed the status of the boot process. It's still stopping at A2.

My System specifications:

128GB Crucial m4 SSD 2.5" (6.4cm) SATA 6Gb/s MLC synchron (CT128M4SSD2)
ASRock Z77 Extreme4 Intel Z77 So.1155 Dual Channel DDR3 ATX Retail
8GB (2x 4096MB) Corsair Vengeance Black DDR3-1600 DIMM CL9-9-9-24 Dual Kit
Intel Core i5 3570K 4x 3.40GHz So.1155 BOX
650 Watt Corsair TX Serie Modular 80+ Bronze
Scythe Mugen 3 Rev.B SCMG-3100

+2 old SATA HDDs ( I can't remember the type now)

Maybe I can put in a new BIOS chip, but I'm not sure if the old one is the problem... I don't know what I else I can try...
Does anyone have more suggestions, what I can do?

best regards Lenny
]]> Thu, 05 Sep 2019 23:40:54 +0000 https://forum.asrock.com/forum_posts.asp?TID=12380&PID=67586&title=no-bios-codea2-on-z77-extreme4#67586