Author: parsecSubject: z97 Extreme 4 - Defective motherboard ?
Posted: 10 Mar 2017 at 10:44am
Zeus wrote:
Oh well i build a new z97 based system with an extreme4 and i'm getting a bunch of post codes on dr.debug. I don't even know for what thing some of them are. I'm getting the codes with that order 4F, b2, 78, 99, b4, A2 the strange thing is that it doesn't stuck on any code & it boots as it should be...but i have some other issues 1) when i switch the PSU from ON to OFF and again to ON, power button doesn't work for the next couple of minutes. 2a) after a windows restart, windows doesn't recognize the pcie wireless card (not a windows or driver issue, card works fine on another machine) 2b) also GPU acts strange sometimes during gameplays, when switch from the select menus to gameplay and back, the stuttering starts, until i reload the game. 3) "Restore on AC/Power Loss" on bios is set to "Power Of" but the system start up when the power recovers.
Clear CMOS didn't help in any case.
PSU : Seasonic Platinum 660 XP2 M/B : Z97 Extreme 4 Bios version : 2.50 CPU: i7 4790K RAM: F3-2400C10D-16GTX (run at 1600MHz) GPU: Gigabyte gtx970 G1
Thanks for reading
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The Dr Debug display always shows POST codes as POST runs. That is normal and does not indicate a problem, that's how the Dr Debug display works.
If a POST process test fails, the code of that test remains on the display. The OS will not boot, and you cannot get into the UEFI/BIOS UI if that occurs.
If the PC boots or you are able to get into the UEFI/BIOS UI, then POST completed successfully.
What version of Windows are you using?
How did you install drivers and mother board software on this PC?
When the power button on the PC case does not work, after turning the PSU on again, look at the network cable input on the board's IO panel. Do you see any of the two small LEDs next to that input light up? That is, if you have an active network cable connected to the network input. I'm trying to determine if power is being applied to the board.
Are you turning the PSU off after you shutdown the PC, and then turn on the PSU later on?
About the wireless card, what model is it and which slot is it being used in? Are you using the Fast Boot option?
About the Restore on AC/Power Loss situation, in the UEFI/BIOS, Advanced screen,
Intel Smart Connect Technology screen, is that feature enabled or disabled? If you don't use that feature, set it to Disabled. Otherwise, that feature may be starting the PC when power is restored.
Regarding your GPU acting strange
sometimes, why do you think it is related to the mother board?