Z97A will not boot.

demope · Dec 27, 2015

Decided to upgrade an old build. Unforunately, previous Mobo had a 1366 socket, so had to transition to a new Mobo+CPU. This also led to having to buy some new Ram.

CPU (new): I5 4690K

Mobo (new): Z97A

Ram (new): Corsair Vengeance 2x8gb, 2400mhz

GPU (1 year old): GIGABYTE Radeon R9 290

PSU (old 750w, bought a brand new 750w from Fry's): Didn't change anything.

Went to rebuild yesterday, ended up not booting. RAM, GPU green light blinks which (I believe) indicates monitoring well. Fans on case/CPU fan/ GPU fans intermittedly spin. This led me to believe it was a failure of my old PSU, so ended up buying brand new PSU. Same issue.

Went through the stickied guide as usual for for a no boot, no issues that I can detect.

Is this a faulty mobo? I've checked both my CPU fan and ensured that my mobo is seated correctly preventing any shorts. I've seen some issues with the old Bios version on this mobo not working with the newer CPUs, but I sadly work about 100+ hours a week and don't have any friends in this city that are PC advocates.

photonboy · Dec 27, 2015

1) I recommend removing the graphics card for now and connect the monitor to the motherboard to use the Intel iGPU.

2) ASUS Z97-A I assume?
BIOS flashing isn't an issue. I doubt it's a compatibility issue now as new boards should have newer BIOS. Even if you got an old board it's possible to flash the BIOS without a compatible CPU.

(I think it's compatible without CPU)

3) Fans are intermittent?
They should be spinning constantly. That's odd, and suggest to me a motherboard problem. I'm not an expert but the CPU fan not spinning constantly seems highly unlikely.

I'll post this and see if I can find anything else.

photonboy · Dec 27, 2015

Update:
Have you verified your DDR3 memory sticks are in the correct slots? (see manual)

Single (A2)
Dual (A2 + B2)

So I'd try a SINGLE stick first in the second slot from the left. If it fails, try the other stick in the same slot.

Other:
a) contact Asus
b) shut down PC and remove CPU, then look at pins to see if any are bent.

demope · Dec 28, 2015

photonboy :

Tried both previously. No change with single RAM,no change with starting on box.

No bends in pins on CPU.

Any chance that this is CPU related? Or do the issues sound pretty suggestive of a faulty mobo?

photonboy · Dec 28, 2015

1) Did you try without the graphics card installed as I suggested?

2) Any chance you don't have the correct monitor INPUT selected on the monitor itself (such as DP or DVI)?

3) Verify the 24-pin and CPU power cables are fully inserted to motherboard. Disconnect any drives, graphics card etc (should ONLY have CPU, CPU fan, DDR3 sticks/stick, and the monitor)

4) Motherboard or CPU?
Hard to verifify if it's the CPU only without swapping. Same for the motherboard. Statistically the motherboard is more prone to failure.

You'd have to contact Asus' Tech Support if RMA'ing anyway so they may have a suggestion.

5) BIOS compatibility issue?
I checked their site, but couldn't confirm if you can see a screen with an incompatible CPU.

*Asus should be able to tell you the BIOS version shipped (you need 1008 or higher) based on the serial. Some models have the BIOS version printed.
Example:
https://www.asus.com/support/Article/563/

**apparently the sticker on the board has a bar code and the LAST FOUR digits correspond to the BIOS version. if true, then again it should say 1008

Summary:
If still stumped contact Asus' tech support.

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Z97A will not boot.

demope

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photonboy

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demope

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photonboy

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