PC Won't Boot To BIOS


  1. caxtin
    Posts : 196
    Windows 10 x64 (Version 20H2) Updated
       New #1

    PC Won't Boot To BIOS


    DELL T5810 Desktop.
    M2 SSD

    I used to use this PC at the office till I got a newer one, some over two years ago. It's been sitting in the office until I took it home yesterday to set it up. My goal it to replace the M2 to 'regular' SSD, install a clean Windows.

    Connected the PC, but it won't boot to the BIOS. When the power button it pressed, I can hear the start up, but that's it. At least I expect to see the BIOS. The power light stays on.
    - Disconnected the keyboard, mouse.and the SSD.
    - Replaced the CMOS battery.
    - Removed the RAM sticks and clean the contacts with a pencil eraser.
    - Unplugged the power from the motherboard for a while and plugged it back.

    Cheers
      My Computer
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  3. Berton
    Posts : 14,022
    Win10 Pro and Home, Win11 Pro and Home, Win7, Linux Mint
       New #2

    My Dells open to the BIOS by pressing F2 when the Dell logo is on screen and may be on the F12 screen.

    About the drive, the two choices are NVMe/PCIe or SATA connections, both are SSD [Solid State Drive].
    Attached Thumbnails Attached Thumbnails PC Won't Boot To BIOS-nvme-sata.jpg  
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  4. Steve C
    Posts : 7,906
    Windows 11 Pro 64 bit
       New #3

    caxtin said:
    DELL T5810 Desktop.
    M2 SSD

    I used to use this PC at the office till I got a newer one, some over two years ago. It's been sitting in the office until I took it home yesterday to set it up. My goal it to replace the M2 to 'regular' SSD, install a clean Windows.

    Connected the PC, but it won't boot to the BIOS. When the power button it pressed, I can hear the start up, but that's it. At least I expect to see the BIOS. The power light stays on.
    - Disconnected the keyboard, mouse.and the SSD.
    - Replaced the CMOS battery.
    - Removed the RAM sticks and clean the contacts with a pencil eraser.
    - Unplugged the power from the motherboard for a while and plugged it back.

    Cheers
    I had this situation once which was due to the PSU not outputting the 5V standby powerline. You can use the paperclip test to see if the PSU turns on properly. See Just a moment...

    When you press the PC ON button that connects the 5V standby line from the PSU back to the PSU commanding the PSU to fully power on and start the PC booting.

    If that isn't the problem you might have a motherboard failure.
      My Computers
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  6. caxtin
    Posts : 196
    Windows 10 x64 (Version 20H2) Updated
    Thread Starter
       New #4

    PC is now booting to the BIOS!

    I checked to make sure the video card was well sat in the there, and it was.
    I decided to switch card with the one in my current PC, and the PC booted to the BIOS.
    Powered off and powered back on, it booted to the BIOS. Then I put back the original video card, and it booted to the BIOS. I tried three times, and voila, booted to the BIOS. In the BIOS, it recognized the SSD, however, in the Boot Sequence, there was no option; no drive shown. Since I had nothing to lose, I decided to reset to default, but canceled. After which, the drive boot options showed up. Don't know why such strange behavior. I replaced the CMOS battery and disconnected the power supply connection to the motherboard for a while and reconnected it.

    I booted to a Windows installation USB, and it ran through to install it. So, looks like all is well. I will feel better after flashing the BIOS to the most recent one which is five version newer than what the PC now has. Also, got all the updates to the PC to update as well.
      My Computer
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  7. 3Bit
    Posts : 334
    W10 22H2 19045.4291
       New #5

    caxtin said:
    PC is now booting to the BIOS!

    I checked to make sure the video card was well sat in the there, and it was.
    I decided to switch card with the one in my current PC, and the PC booted to the BIOS.
    Powered off and powered back on, it booted to the BIOS. Then I put back the original video card, and it booted to the BIOS. ....
    Has happened to me too. Probable cause possible contacts oxidation and through removal/reinsertion contacts got "cleaned".
      My Computer
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