Re: HP Elitebook 840 G3 motherboard faulty?



Um... There's two, but I can't really make out the writing on them, they're too small... both winbond, I think one of them says 25q64fv10 and the other 25q128vfq, but google doesn't know those parts numbers, so I could be mistaken.
This is the best picture I could take....

Re: HP Elitebook 840 G3 motherboard faulty?


All right I will have a look in the forum. Thanks you very much for your help! ...

Re: HP Elitebook 840 G3 motherboard faulty?

I've already found a number of youtube videos in the subject

Just to clarify, [URL="https://www.ebay.de/itm/CH341A-24-25-Series-EEPROM-Flasher-USB-BIOS-Programmer-Mit-SOIC8-Clip-On-Board-h/264745770576?_trkparms=ispr%3D1&hash=item3da413de50:g:HMMAAOSwsVVez4i-&amdata=enc%3DAQAEAAACYIQvEcHUrT7nmUC3yY5qbPyaBN1nJEDYW8MyypsJPgXK3f3BUpXm98HE2ivWR1udtSyfdF9hLV786xYMxP8CsKiv0%252FDetuFs6EtbJTiWP55e5X5j9NumHbETodQ64cCajtRAtIKixXnut19oq6IRGsdtJr9oMuduZH8R3hPpKMomSItQbgA1Ipo52tG4OpNMXWt%252FWsYct49BL0p84sOXK2dQB8qyO85s9lEzhG33mb%252FgHlpLhC1S22C57bejENy5spzfso9DWk4tljPFdYmmfd3to%252BoYjQKAyomb27ipntz3nbe5Cjo5xBhGS0TET9%252B0TOVdMsPDQM3yeIf1VNSf9dl8jv2JYxgPEDF1tXkI0C10oY9uaOTSm3VlkbNjAjbWWjhdWCuhL6vwnBf0Fifv8Xw6MWk2lJChXHr%252BV1jhPfdZLtukLS86t0lVLkUp7FF1hqhNstEurok1uyhclHLhLDHJKm6ieKGV%252FriVxT41johusXjUTEKLX56Ust0K7%252B05oz36zXYWTufJ4latLKdEFJxmNlg4XzEVsGTPzssIAnB9hG8RfkTNnR7z3lolOqbjSnyLeipetsZxu0OR0pbAFQQdy8ivTYp88asv7Ba1sqcLCqSJNr%252B4ZRcm3n53BsS4UKOxI7opyoMBlQPpU9nQMiim2%252BW8PwgOZDzMuaQDLYjA3HOeKu51twmjxrtaMeEIObtrFm7Q0LtmHtRqQ582jdV76XV7DtAV6WR7XTCud7VnEsOc6U8RoYRdDzThC69McUel0cG%252B0tvI%252FSxlmIu12Gn5NkdgFfEcvG3537JJBDti%26cksum%3D2647457705766d5b08f02fd8469895c4826f549770ab%26ampid%3DPL_CLK%26clp%3D2334524"]this[/URL]...

Re: HP Elitebook 840 G3 motherboard faulty?

Just tested it, took the fan off, started it, the cpu got hot within seconds.

I also saw that the light on the SDD was on (I got a new M.2 and put it in). But since the Disk is blank, I guess that only means that the SSD is receiving power?

Re: HP Elitebook 840 G3 motherboard faulty?



How do you figure that?...

Re: HP Elitebook 840 G3 motherboard faulty?



I tried to flash the bios the way HP recommended... I didn't know about external programmers. But I'll try it!

The CPU doesn't get warm at all. The fan spins and I guess thermal paste should hold for 4 years (the manufacture date of the laptop is August 2016). But as I'm going to take it apart anyways, I will replace the thermal paste.

I know a few things about taking computers apart, i just don't know about replacing/checking parts on the motherboard itself....

Re: HP Elitebook 840 G3 motherboard faulty?

So you don't think the Motherboard is faulty somewhere?

Re: HP Elitebook 840 G3 motherboard faulty?



Would you mind telling me what "special tool" you are referring to?...

Hi,

I bought a used HP Elitebook 840 G3 on ebay. It came as untested, without a Hard Drive.
When I first started it, it gave me a series of POST beeps - 2.2, followed by 3.2. I identified the beeps as corrupted bios and faulty ram. I replaced the ram and the beeps stopped. Now when I turned it on, the keyboard backlight went on for a moment, then turned off, followed by the laptop turning itself off shortly after.
I created a bios recovery flash drive, using an HP setup file, popped it in and started it, while keeping windows+b pressed, the method outlined [URL="https://support.hp.com/us-en/document/c02693833#usbrecovery"]here[/URL]...

Re: New Members - please post your introductions here

Hi,
Greetings from Germany! I registered here to try and find an answer on how to get a broken laptop working, though I might stick around and try to help others aswell