EVGA

Z77 Issue-POST Code Error A2 Resolved

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jboudwin
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2013/02/20 17:14:23 (permalink)
Recently, on the EVGA forums, I purchased from Chris an I5 3570K CPU.  He took it directly out of a working rig but it will not work for me.  This is really bizarre.  I tried 2 new EVGA Z77 Stingers and a new Gigabyte Z77N mini-ITX.  I get POST error A2 on the Stingers and none of the set ups give anything on the monitor.  Gigabyte mobo gives no errors ( I don't know if it can); just nothing happens.  There are no bent CPU socket pins.  I tried 2 working hard drives.  Multiple SATA 3 and 6 cables.  2 different sets of DDR3 memory in single and dual slots.  2 different power supplies.  Tried with and without a video card.  I am completely stumped.   I wonder if I5 3570K is incompatible with Z77 mini-ITX although it is included in the approved CPU lists.
 
Chris's set up was: 
Asus maximus iv gene-z/gen3 
Dominators platinum 2133
ax750 
asus gtx 660ti
asus xonar essence stx
 
I sent the CPU back to Chris and he re-installed it and it works fine.  Any ideas what to do?  Chris still has the CPU.  Should I ask him to RMA it despite it working in his rig?
Thanks ahead for any help.
post edited by jboudwin - 2013/03/15 17:53:42

Mobo...EVGA Z390 Dark    CPU...I9 9900K . GPU...EVGA GTX 2080 Ti .  RAM...Corsair Vengeance RGB PRO 32 GB 3200MHz    SSD...Samsung V-NAND SSD 970 EVO NVMe M.2 2x2TB
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#1

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    jboudwin
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    Re:Z77 Issue 2013/02/21 12:52:45 (permalink)
    Looks like I've got people stumped>

    Mobo...EVGA Z390 Dark    CPU...I9 9900K . GPU...EVGA GTX 2080 Ti .  RAM...Corsair Vengeance RGB PRO 32 GB 3200MHz    SSD...Samsung V-NAND SSD 970 EVO NVMe M.2 2x2TB
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    buggyruth
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    Re:Z77 Issue 2013/02/21 14:00:41 (permalink)
    jboudwin

    Looks like I've got people stumped>

    I would have suggested backing the pressure off some on the CPU cooler mounting hardware, but you don't have the CPU to try it?
    Can't trouble shoot it when you don't have it!

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    jboudwin
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    Re:Z77 Issue 2013/02/21 19:13:11 (permalink)
    That's interesting...but on 3 different mobo's?  How would too much pressure affect do that?  I have a new I7 3770K coming tomorrow and will find out how it works in those mobo's.  I still want the I5 3570K for a second rig.  Thanks for the idea.

    Mobo...EVGA Z390 Dark    CPU...I9 9900K . GPU...EVGA GTX 2080 Ti .  RAM...Corsair Vengeance RGB PRO 32 GB 3200MHz    SSD...Samsung V-NAND SSD 970 EVO NVMe M.2 2x2TB
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    #4
    buggyruth
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    Re:Z77 Issue 2013/02/22 01:36:46 (permalink)
    jboudwin

    That's interesting...but on 3 different mobo's?  How would too much pressure affect do that?  I have a new I7 3770K coming tomorrow and will find out how it works in those mobo's.  I still want the I5 3570K for a second rig.  Thanks for the idea.

    I hope it works for you! There were some issues with this problem in these forums.

    +1 If you like my Mods-Rig
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    COOLER MASTER HAF X RC-942-KKN1 / EVGA Z77-FTW / Intel I7-3770K  / 2 X Corsair Force Series GT 240GB. SSD Raid-0 / Western Digital Caviar Black WD2002FAEX / G.SKILL Trident X Series F3-2400C10D-16GTX  / 2 X EVGA GeForce GTX 670-FTW+4GB. (04G-P4-3673-KR) with EK GeForce 680 GTX VGA Liquid Cooling Blocks - Acetal CSQ (EK-FC680 GTX - Acetal CSQ) / Swiftech Maelstrom 51/4" dual bay reservoir with dual MCP35X pumps / RayStorm CPU WaterBlock (Intel) Copper / XSPC RX360 Rad  & XSPC EX140
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    jboudwin
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    Re:Z77 Issue 2013/02/24 09:07:56 (permalink)
    Ok the bizarre continues.  Tried the new I7 3770K CPU and I get the same problem.  Tried easing off of the CPU cooler screws.  Maybe the 600W PSU in the SilverStone SUGO 7 is not compatible?  I've ordered a Corsair 750W PSU and a new case for it.

    Mobo...EVGA Z390 Dark    CPU...I9 9900K . GPU...EVGA GTX 2080 Ti .  RAM...Corsair Vengeance RGB PRO 32 GB 3200MHz    SSD...Samsung V-NAND SSD 970 EVO NVMe M.2 2x2TB
    PSU...Silverstone Strider 1500W   Case...CoolerMaster HAF   CPU waterblock... 
    EVGA 240mm CLC OS...Windows 10 Professional 64bit  Headphones...Beyerdynamic DT770 Pro   Monitor...BenQ 27" 120Hz X2
    http://www.heatware.com/eval.php?id=72035
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    #6
    buggyruth
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    Re:Z77 Issue 2013/02/24 10:45:27 (permalink)
    jboudwin

    Ok the bizarre continues.  Tried the new I7 3770K CPU and I get the same problem.  Tried easing off of the CPU cooler screws.  Maybe the 600W PSU in the SilverStone SUGO 7 is not compatible?  I've ordered a Corsair 750W PSU and a new case for it.

    I am just throwing random ideas at you.
    Has this MB been in this case and working at all prior to any hardware changes? No standoffs under the MB in the wrong place (grounding out MB)? All required power connections attached to MB? GPU worked previously or tested in another PC?

    +1 If you like my Mods-Rig
    http://www.heatware.com/eval.php?id=78759
    COOLER MASTER HAF X RC-942-KKN1 / EVGA Z77-FTW / Intel I7-3770K  / 2 X Corsair Force Series GT 240GB. SSD Raid-0 / Western Digital Caviar Black WD2002FAEX / G.SKILL Trident X Series F3-2400C10D-16GTX  / 2 X EVGA GeForce GTX 670-FTW+4GB. (04G-P4-3673-KR) with EK GeForce 680 GTX VGA Liquid Cooling Blocks - Acetal CSQ (EK-FC680 GTX - Acetal CSQ) / Swiftech Maelstrom 51/4" dual bay reservoir with dual MCP35X pumps / RayStorm CPU WaterBlock (Intel) Copper / XSPC RX360 Rad  & XSPC EX140
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    jboudwin
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    Re:Z77 Issue 2013/02/24 14:27:38 (permalink)
    buggyruth

    jboudwin

    Ok the bizarre continues.  Tried the new I7 3770K CPU and I get the same problem.  Tried easing off of the CPU cooler screws.  Maybe the 600W PSU in the SilverStone SUGO 7 is not compatible?  I've ordered a Corsair 750W PSU and a new case for it.

    I am just throwing random ideas at you.
    Has this MB been in this case and working at all prior to any hardware changes? No standoffs under the MB in the wrong place (grounding out MB)? All required power connections attached to MB? GPU worked previously or tested in another PC?


    Random ideas are better than no ideas.  Had a cheap older mobo on the Sugo 7 mini-ITX case for a non-demanding position.  Need another rig that is more capable but space is limited so replaced that mobo with Z77 Stinger which gave POST code error A2.  RMA'd and EVGA replaced that one with a brand-new one which did the same.  Thinking it was a Stinger issue I bought a Gigabyte mini-ITX mobo but it did nothing either.  All hardware other than PSU is new and checked out ok on another computer.  That's why I bought another PSU which hopefully will be here in 3 days.
     
    All power connectors are correct and I was able to check output of 8 pin connectors and confirmed 12 volts at each pin.  I don't know what pins to test or their output on the 24 pin connector.  That's why I got a new PSW on order.
     
    Standoffs are not an issue since I am testing all on the table top prior to mounting in case.
     
    Thanks for ideas and keep them coming.

    Mobo...EVGA Z390 Dark    CPU...I9 9900K . GPU...EVGA GTX 2080 Ti .  RAM...Corsair Vengeance RGB PRO 32 GB 3200MHz    SSD...Samsung V-NAND SSD 970 EVO NVMe M.2 2x2TB
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    EVGA 240mm CLC OS...Windows 10 Professional 64bit  Headphones...Beyerdynamic DT770 Pro   Monitor...BenQ 27" 120Hz X2
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    buggyruth
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    Re:Z77 Issue 2013/02/24 14:45:11 (permalink)
    It sounds like you may be on the right track with the PSU. Cross your fingers

    +1 If you like my Mods-Rig
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    jboudwin
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    Re:Z77 Issue 2013/02/24 19:02:16 (permalink)
    Fingers are definitely crossed.

    Mobo...EVGA Z390 Dark    CPU...I9 9900K . GPU...EVGA GTX 2080 Ti .  RAM...Corsair Vengeance RGB PRO 32 GB 3200MHz    SSD...Samsung V-NAND SSD 970 EVO NVMe M.2 2x2TB
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    jboudwin
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    Re:Z77 Issue 2013/02/27 18:36:49 (permalink)
    Fingers are no longer crossed...my eyes are!  Got new PSU today and Z77 Stinger is giving the same A2 POST code error and Gigabyte mobo still does nothing.  Everything is brand new and checks out on other systems.  Even checked hard drive with HD Pro.  I need mini-ITX for my office so I bought an ASUS Z77 micro-ATX to replace my wife's aging out-of-the box HP computer.  I'll try all the hardware on that.  I can't be the only one with a compatibility problem with the Z77 mini-ITX.  This is really strange but I'll keep on trying.

    Mobo...EVGA Z390 Dark    CPU...I9 9900K . GPU...EVGA GTX 2080 Ti .  RAM...Corsair Vengeance RGB PRO 32 GB 3200MHz    SSD...Samsung V-NAND SSD 970 EVO NVMe M.2 2x2TB
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    jboudwin
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    Re:Z77 Issue 2013/03/15 18:03:58 (permalink)
    I found the problem but cannot explain it.  POST code error A2 is supposed to point to HDD issue.  New I7 3770 gave same problem on Stinger and Gigabyte mobo's.  On a whim I changed the monitor cable.  I had HDMI to HDMI cable originally and changed to HDMI-DVI cable(HDMI to mobo and DVI to monitor).  Voila' both mobo's POST'ed.  Both cables worked on other computers.  I don't know if HDMI input on monitor is bad and I can't explain why that would prevent booting.  Either way I'm glad it is fixed. 
     
    Hope this helps others with problems.

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    buggyruth
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    Re:Z77 Issue 2013/03/15 18:09:05 (permalink)
    Glad you figured it out, nice find!

    +1 If you like my Mods-Rig
    http://www.heatware.com/eval.php?id=78759
    COOLER MASTER HAF X RC-942-KKN1 / EVGA Z77-FTW / Intel I7-3770K  / 2 X Corsair Force Series GT 240GB. SSD Raid-0 / Western Digital Caviar Black WD2002FAEX / G.SKILL Trident X Series F3-2400C10D-16GTX  / 2 X EVGA GeForce GTX 670-FTW+4GB. (04G-P4-3673-KR) with EK GeForce 680 GTX VGA Liquid Cooling Blocks - Acetal CSQ (EK-FC680 GTX - Acetal CSQ) / Swiftech Maelstrom 51/4" dual bay reservoir with dual MCP35X pumps / RayStorm CPU WaterBlock (Intel) Copper / XSPC RX360 Rad  & XSPC EX140
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    jboudwin
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    Re:Z77 Issue 2013/03/15 18:13:08 (permalink)
    Thanks Buggy for your ideas.

    Mobo...EVGA Z390 Dark    CPU...I9 9900K . GPU...EVGA GTX 2080 Ti .  RAM...Corsair Vengeance RGB PRO 32 GB 3200MHz    SSD...Samsung V-NAND SSD 970 EVO NVMe M.2 2x2TB
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    EVGA 240mm CLC OS...Windows 10 Professional 64bit  Headphones...Beyerdynamic DT770 Pro   Monitor...BenQ 27" 120Hz X2
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