Intermittent boot error that I don’t know how to diagnose

Hi,

I have an ASUS Z97-A board, with the ‘Wait for F1 if error’ option, enabled in the BIOS by default. A couple of months ago, the computer intermittently started having a problem that caused it to ‘wait’ as indicated by the option. I can F1 into the bios setup, and 9 times out of 10, if I then restart from BIOS the system boots into Windows with no problems. The 1 time out of 10 the problem repeats, another F1 into the bios almost certainly allows the system to boot.

I know a bit about computers, and have built the last 4 that we have owned. However, I have no idea how to diagnose this issue. I’ve gone into the BIOS settings to see if I can spot any obvious problems but can’t see anything off-hand. I am aware though that this is an area I lack expertise in so might be missing something. The fact it is only an intermittent problem makes it more difficult to resolve.

Can anyone give me guidance on how to go about diagnosing and hopefully fixing whatever is causing this to happen?

For reference, my system specs are:
Intel i5-4680K unclocked
Z97-A motherboard
32GB DDR3 Kingston RAM
GeForce GTX 970
Windows 8.1 64-Bit

Thanks in advance for any assistance,

Phil
Reply to Wibbs
3 answers Last reply
More about intermittent boot error dont diagnose
  1. I would pick up a cheap system board speaker and see if it gives any error codes, it doesnt look like there are and LED or display on the board that would show you what the error would be.

    My nest thought would be to up the QPI/DRAM Core Voltage just a little since your running 4 sticks and max amount of ram
    Reply to faalin
  2. Wibbs said:
    Can anyone give me guidance on how to go about diagnosing and hopefully fixing whatever is causing this to happen?

    Your motherboard has POST state leds. You can use those to identify the problem.
    Manual page 1-36.
    https://www.asus.com/us/Motherboards/Z97A/HelpDesk_Manual/
    Also during post process there might be post state codes displayed on screen.
    Reply to SkyNetRising
  3. SkyNetRising said:
    Wibbs said:
    Can anyone give me guidance on how to go about diagnosing and hopefully fixing whatever is causing this to happen?

    Your motherboard has POST state leds. You can use those to identify the problem.
    Manual page 1-36.
    https://www.asus.com/us/Motherboards/Z97A/HelpDesk_Manual/
    Also during post process there might be post state codes displayed on screen.


    Thank you - I hadn't realised that. I'll check them the next time the problem occurs and see if it tells me anything.
    Reply to Wibbs
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