No longer able to get into BIOS

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  1. Posts : 1,867
    Windows 10 Pro 2004 20H1
       #11

    As mentioned above, remove a memory stick, or the hard drive, and see if it forces the BIOS prompt.
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  2. Posts : 7,124
    Windows 10 Pro 64 bit
       #12

    Certainly try turning off fast startup under Windows power options. Try booting to the BIOS from within Windows using the advanced start up options Boot to UEFI Firmware Settings from inside Windows 10

    You can also get to that menu by holding down Shift when you select restart. Once in the BIOS also turn off any Fast Boot option Enable or Disable Fast Boot in UEFI Firmware Settings for Windows
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  3. Posts : 10
    Windows 10 Pro 64 bit
    Thread Starter
       #13

    OldNavyGuy said:
    As mentioned above, remove a memory stick, or the hard drive, and see if it forces the BIOS prompt.
    At present there is only one memory stick installed. Never tried even booting a PC with NO memory .. I will try both memory removed and remove both drives. Might take me a little time as this chassis is a kinda unique 19" rack mount chassis that is installed in a radio communications console. (special design to fit the limited depth of the console) The mobo choice was was limited (micro-atx) and getting to the memory, and other internal internally mounted hardware requires a bit of complicated dis-assembly. So that's why I've been putting off pulling or swapping memory, drives etc. While I have it pulled out of the rack and disassembled I'll your suggestions and if no help will finally try re-settng the BIOS (that part of the mobo is impossible to get to).
    All things considered I'm thinking I may have been better off building a stand alone vertical design chassis and left it on the floor under the console desk. Sigh. Sure looks nice mounted in the rack mount tough.

    - - - Updated - - -

    Steve C said:
    Certainly try turning off fast startup under Windows power options. Try booting to the BIOS from within Windows using the advanced start up options Boot to UEFI Firmware Settings from inside Windows 10

    You can also get to that menu by holding down Shift when you select restart. Once in the BIOS also turn off any Fast Boot option Enable or Disable Fast Boot in UEFI Firmware Settings for Windows
    Been there done that. Also see my post #10 where I noted discussed Fast Startup. FWIW, I've also worked extensively in all Windows power, and startup options. (tried all) Also as already mentioned there is no way to get to the Windows UEFI bios using any of the normal Windows 10 OS options or any kind of 3rd party option (Like the ASRock various utilities)
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  4. Posts : 18,170
    Win 10 Home 10.0.19045.1806 (x64) [22H2]
       #14

    Rich A said:
    and if no help will finally try re-settng the BIOS (that part of the mobo is impossible to get to).
    It would have helped to know this comp was built into a rack mount case. :)

    Anyway, you can try simulating a power outage. Just turn off the power to the comp, at the plug strip (or w/e it's plugged into).

    When I get a real power outage... 9 times out of 10, when the power returns, I get a screen that says...

    Press F1 to enter Setup (BIOS). This computer was NOT shut down properly. <---- Or something like that. So you then HAVE to press F1 to enter the Setup (BIOS), because it won't let you do anything else.

    This is a lot easier than tearing apart a rack mount case, to get at the CMOS battery.


    WARNING: Use as a last resort. May prevent you being able to boot into Windows if you can't get into the BIOS and then... Save & Exit from the BIOS.
    Last edited by Ghot; 10 Jul 2020 at 08:00.
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  5. Posts : 10
    Windows 10 Pro 64 bit
    Thread Starter
       #15

    Ghot said:
    It would have helped to know this comp was built into a rack mount case. :)

    Anyway, you can try simulating a power outage. Just turn off the power to the comp, at the plug strip (or w/e it's plugged into).

    When I get a real power outage... 9 times out of 10, when the power returns, I get a screen that says...

    Press F1 to enter Setup (BIOS). This computer was NOT shut down properly. <---- Or something like that. So you then HAVE to press F1 to enter the Setup (BIOS), because it won't let you do anything else.

    This is a lot easier than tearing apart a rack mount case, to get at the CMOS battery.


    WARNING: Use as a last resort. May prevent you being able to boot into Windows if you can't get into the BIOS and then... Save & Exit from the BIOS.
    I can do that .. I now have the unit pulled and setup on the work bench. (While in the rack it's designed to run 24/7 and is using a filtered AC line and hooked up to a UPS) I'll try the CMOS reset now that I can get to that area of the mobo. If that doesn't work I'll try your "Pull the AC plug" solution. <grin> Yeah I know the potential problems doing that, but at this point I think we have tried everything else. Thanks .. This is looking more and more like a bad mobo .. I'll post my results later today.

    - - - Updated - - -

    Success !! Was not looking forward to pulling the chassis just I could get at the CMOS jumper and battery. So after exhausting all other fixes that was the solution. Somehow the BIOS was damaged which made it impossible to access the BIOS in any way. Now the system BIOS is once again accessible in "all" the normal ways. Whew. BTW the "Pull the plug" simulating a power outage while it was running didn't work.

    I gotta laugh .. it's like the old adage where "a lost item when found is ALWAYS in the last place you looked". <grin>

    Now I'll have to start all over to try fix the original 2 main problems. 1. can't get any kind of I/O to work in Windows 10 (no com port communications either with the on-board serial port OR any kind of virtual serial software or adapters. And 2. Windows 7 has all kinds of problems running with this hardware. I'll start a new thread on those problems later.

    Thanks .. Except for the original problem with the I/O ports in windows 10 .. the 10 OS is working fine .. and I can now get into the bios again.
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  6. Posts : 18,170
    Win 10 Home 10.0.19045.1806 (x64) [22H2]
       #16

    Rich A said:
    I can do that .. I now have the unit pulled and setup on the work bench. (While in the rack it's designed to run 24/7 and is using a filtered AC line and hooked up to a UPS) I'll try the CMOS reset now that I can get to that area of the mobo. If that doesn't work I'll try your "Pull the AC plug" solution. <grin> Yeah I know the potential problems doing that, but at this point I think we have tried everything else. Thanks .. This is looking more and more like a bad mobo .. I'll post my results later today.

    - - - Updated - - -

    Success !! Was not looking forward to pulling the chassis just I could get at the CMOS jumper and battery. So after exhausting all other fixes that was the solution. Somehow the BIOS was damaged which made it impossible to access the BIOS in any way. Now the system BIOS is once again accessible in "all" the normal ways. Whew. BTW the "Pull the plug" simulating a power outage while it was running didn't work.

    I gotta laugh .. it's like the old adage where "a lost item when found is ALWAYS in the last place you looked". <grin>

    Now I'll have to start all over to try fix the original 2 main problems. 1. can't get any kind of I/O to work in Windows 10 (no com port communications either with the on-board serial port OR any kind of virtual serial software or adapters. And 2. Windows 7 has all kinds of problems running with this hardware. I'll start a new thread on those problems later.

    Thanks .. Except for the original problem with the I/O ports in windows 10 .. the 10 OS is working fine .. and I can now get into the bios again.


    Good work. I had a feeling setting the BIOS to defaults would solve your issue. It seemed to me that your BIOS just "glitched", which, in your case, prevented you from getting INTO the BIOS.

    Glad I could help Rich.


    As for the I/O issues, I would start with Device Manager.
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  7. Posts : 10
    Windows 10 Pro 64 bit
    Thread Starter
       #17

    Ah .. and I found the RS-232 problem. Bad ribbon cable going from the internal mobo COM port to the chassis DB-9 connector. Now the com port is controlling my radio just fine. I believe the last problem (a junk older USB to Serial cable) has firmware that is just not compatible in the Windows 10 OS. I need a 2nd com port to control another part of the radio so I'll order a new one and that should put everything in order. Thanks again .. it's been fun.
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  8. Posts : 7,124
    Windows 10 Pro 64 bit
       #18

    Rich A said:
    Success !! Was not looking forward to pulling the chassis just I could get at the CMOS jumper and battery. So after exhausting all other fixes that was the solution. Somehow the BIOS was damaged which made it impossible to access the BIOS in any way. Now the system BIOS is once again accessible in "all" the normal ways. Whew. BTW the "Pull the plug" simulating a power outage while it was running didn't work.
    A power glitch once trashed the BIOS in my dual BIOS Gigabyte board - in my case the PC would not boot. I switched to the secondary BIOS and had to reflash the primary BIOS to recover. You might want to reflash your BIOS to be sure.
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  9. Posts : 1,867
    Windows 10 Pro 2004 20H1
       #19

    I would restore the default BIOS settings and see how things run before considering re-flashing.
      My Computer


 

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