840 G4 if shutdown does not start until cmos reset

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • medinfo
    Badcaps Veteran
    • May 2016
    • 328
    • Morocco

    #1

    840 G4 if shutdown does not start until cmos reset

    HP ELitebook 840 G4, if shutdown does not start, until cmos reset or with key WIN+B, when restart it start normaly but if shutdown does not start.

    - power button working
    - Bios updated to latest
    - CMOS Battery changed
    - Battery charged
  • mcplslg123
    Badcaps Legend
    • Jun 2015
    • 7262
    • india

    #2
    Re: 840 G4 if shutdown does not start until cmos reset

    Check RTC circuit like RTCRST#/SRTCrst#/INTRUDER# etc.

    Comment

    • medinfo
      Badcaps Veteran
      • May 2016
      • 328
      • Morocco

      #3
      Re: 840 G4 if shutdown does not start until cmos reset

      Schematic not found for this motherboard .

      Comment

      Related Topics

      Collapse

      • GIGA10
        Gigabyte G5 KE Clearing CMOS won't reset BIOS Admin password
        by GIGA10
        Hello everyone. I'm not sure if this post belongs in this section? If not, please kindly move it to right section Mod/Admin.

        I have a Gigabyte G5 KE laptop and I have forgotten the BIOS Admin password. I can enter BIOS menu but when trying to enter BIOS settings it ask for my password which I have forgotten. I can boot also in to Windows 11. I have tried to clearing CMOS by removing the CMOS battery for 10h. I have tried also to remove both power battery and CMOS battery and bridge the CMOS 2 pin connector on the motherboard. Then when booting I get a message that NVRAM has been...
        12-23-2022, 03:31 AM
      • rutgerv
        Acer Swift 3 SF314-42 not powering up
        by rutgerv
        Dear all,

        For a friend I'm trying to repair an Acer Swift 3 laptop (SF314-42). I'm not a professional, but have some experience (both as amateur and professional) in working with electronic design and repair of musical instruments.

        The issue with the Acer laptop is the following:
        It was bought new and used (not heavily) at home for about three years. After normal use, it was put to sleep, connected to charger and left over night (just like any other day). The next morning, the laptop would not wake up from sleep. Instead, when pressing the power button, the power...
        08-02-2024, 06:59 AM
      • REpairAT
        HP 15-cb002ng no picture after CMOS reset
        by REpairAT
        Hi,
        I have a strange fault with this notebook, MB Nr. is
        G75A DAG75AMBAD0 REV: D

        Backlight goes on, but no picture. Caps blinking 5x long, 3x short, meaning
        "This condition indicates the embedded controller cannot reach the BIOS within the established time limit" regarding to HP

        Whenever I unplug battery and charger, message "CMOS has been reset..." after hitting enter, again, only backlight, no picture and Capslock blinking.

        I tried to clear ME already, no changes (original dump attached)

        Any...
        06-27-2022, 01:23 PM
      • F R 2568
        Dell Latitude 5420 does not start (no post) need help to find the reason why
        by F R 2568
        Hello all,

        this is my first post, so if I make mistakes please do not hesitate to point them out, thank you in advance.

        I got a Dell Latitude 5420 (Service Tag: 7RFM6D3, Motherboard: GDF40 LA-491P Rev.: 2.0 (A01)) which does not start and I want to repair it. These are the symptoms:

        If the laptop is only connected to the AC adapter (battery removed):

        When I press the power button, the keyboard backlight and the display backlight are turning on. Caps key light is lightning, but key does not respond to pressing it.

        The power/battery...
        01-08-2025, 05:45 AM
      • Caimano
        hp Pavilion 14 CE-1XXX 5 fast 3 slow blinks or cmos checksum error if restarted immediately after shutdown or suspend
        by Caimano
        hp Pavilion 14 CE-1XXX
        MB G7AD-2G DAG7ADMB8D0 REV D
        Processor i5 8265U

        AFAIK schematics or boardview are not available for this MB, but I used a similar board as a reference (G7AL-2G)

        Laptop came in not booting with caps lock blinking 3 fast- 2 slow indicating RAM error. Charging works fine. Found bad soldering on the only ram socket present (2 outer left pins and 2 outer right pins).
        Once soldered the laptop started fine and I was able to install Windows 11, upgrade BIOS to version F30 from Windows without a problem, BUT I found a strange and annoying...
        02-06-2024, 10:14 AM
      • Loading...
      • No more items.
      Working...