HP 450 G3 Strange behavior

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • zesti
    New Member
    • Nov 2020
    • 4
    • Pakistan

    #1

    HP 450 G3 Strange behavior

    HI,
    Got the above laptop. As soon as the power is plugged in all lights turn on, the charging light flashes 9 times orange then 4 times orange/white, the fan spins full speed and then after few seconds restarts and same cycle repeats...... any lead..... I've noticed the I/O chip (nuvoton NPCE586HA0MX) got warm.
  • Spider1211
    Badcaps Veteran
    • Oct 2019
    • 532
    • Mauritius

    #2
    Re: HP 450 G3 Strange behavior

    Maybe a faulty SIO, try replacing it.

    Comment

    • zesti
      New Member
      • Nov 2020
      • 4
      • Pakistan

      #3
      Re: HP 450 G3 Strange behavior

      I have 2 840 G3's, one with touch and and one without touch. Can I replace SIO's? just for checking...

      Comment

      • Spider1211
        Badcaps Veteran
        • Oct 2019
        • 532
        • Mauritius

        #4
        Re: HP 450 G3 Strange behavior

        NPCE586HA0MX is not programmable. As long as the SIO has the same reference, you can use it as replacement.

        Comment

        Related Topics

        Collapse

        • dhs6512
          Lenovo Legion 5 15ARH05H, NM-D281 Rev: 1.0 not work with the battery
          by dhs6512
          Hello. Lenovo Legion 5 15ARH05H, NM-D281 Rev: 1.0 board
          Initially dead. Inspection: the board was not touched, on EC IT8227E-192 2101-CXA there is a mini-burnout.
          Replaced with the same one, flashed the EC with the official firmware (had to solder to the pins), left the main firmware (Gigadevice 25LB128DSIG) original.
          When connecting the charger, the device started, gave picture and works, checked all the functions - ok.
          Connected the original battery. Only on the battery the device starts for a second, lights up the keyboard backlight and turns off.
          When connecting...
          10-29-2024, 11:04 AM
        • serious_electron
          Strange! Acer laptop not powering on but charging the battery (orange light on when charger and battery plugged in).
          by serious_electron
          Hello Everyone!

          I have an Acer Aspire A315-42 laptop. I generally leave it on for long time by closing down its lid (so it enters the sleep mode). Recently, it rained quite heavily in out area. And the humidity and moisture seem to be high. So one late evening, after I opened the lid and turned on the laptop, it did power on as the blue light turned on but after it booted to the desktop screen, just 5-10 seconds after both the screen and blue light went out and laptop shut down (the blue power light turned orange). And after 2-4 seconds that orange light went off and the laptop died.
          ...
          06-28-2025, 02:57 PM
        • mosfetratus
          macbook A2918, orange light off when shut off
          by mosfetratus
          When i fully shut off mac, orange light goes off and wont react to power button. I have difficult time resetting with combination "shift+control+option and power button", because it rarely works (reason unknown), when i manage to get orange light and then press power button macbook wont turn on and orange light goes off. When i hold combination with power button it turns on, and works fine if put it to sleep mode.

          Works with battery and charges, but when i shut off i get this problem.

          It had liquid spill. Board has no corrosion, keyboard is working, power button...
          05-31-2024, 03:34 AM
        • ferah831208
          Strange battery present behaviour in Lenovo Legion 5-15ARH05 mb model nm-d041
          by ferah831208
          Hello guys, i need help with this problem, I have a NM-D041 mobo, it came with low impedance in 3v linear regulator rail, the cause was a damaged EC controller ITE8227e-192. I ordered a new one and replaced it. This laptop have a different chip for keyboard management and it8227e pins for programming ITE chips are not accesible through keyboard interface, I flashed it using i2c interface pins with vertyanov programmer because laptop was dead and SPI flash didn't have power (only 3v EC) so it couldn't access firmware stored in SPI memory. I read SPI and extracted it8227 firmware from original BIOS...
          03-18-2025, 01:18 AM
        • Catmouse
          HP EliteDesk 800 G4 - Orange LED behind Mainboard, not booting after BIOS Update
          by Catmouse
          Hi,

          I have 2 Elitedesk 800 G4 which have stopped working after a BIOS Update. It was doing the updates and instead of rebooting automatically it just stayed off and I was left with an orange LED being on behind the mainboard and no reaction at all when I hit the power button, it seems to be completely dead.
          Removing the battery, pressing and holding the yellow button on the MB didn't do anything either.
          Others have updated fine without any such issues.

          When googling I've found other people having the same issue with the orange LED being on and the PC also...
          10-29-2024, 04:27 AM
        • Loading...
        • No more items.
        Working...