HP 450 G3 Strange behavior

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • 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.
    Tags: None
    • 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

                Previous template Next

                Related Topics

                Collapse
                • Wutru
                  HP Elitebook 820 G4 BIOS repair assistance required
                  by Wutru
                  Hi guys,

                  If someone would be able to provide some expertise, I'd be very grateful.

                  BIOS Corruption - Cause
                  So I managed to corrupt my machine by installing linux and enrolling custom secure boot keys. I did choose to enroll the Microsoft keys as well, to prevent any potential bricking due to 3rd party drivers from HP being signed with those keys.
                  After doing that, and rebooting(it did boot, powerLED, fanspin etc.), the laptop did not give any video output on the LCD or video connectors. I think I was able to get in BIOS and trigger the beeper by pressing ESC....
                  09-06-2025, 10:32 AM
                • 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
                • Weelcup
                  XPS 9520 not powering up. Solid orange led
                  by Weelcup
                  Hi friends

                  I have a dell XPS 9530 which had some liquid damage to the usb area. I replaced both the usbc iCs and not I can see 20v on the meter. But it does nothing and the 20v is not passing to charge the battery or turning on the board either.

                  I suspected the PD controller (usbc controller) but it will need to be flashed if I decide to replace it. I thought that if the usbc controller needs flashing then at least the board should turn on on the battery. I charged the battery externally and attached it to the laptop. Now the 11.8v is actually passed to the board I can...
                  10-20-2025, 04:22 PM
                • Loading...
                • No more items.
                Working...