It’s one of the core processors that are responsible for hardware initialization when the operating system starts booting up. It comes with the motherboard embedded within as a chip. It’s the Basic Input Output System of a PC that gets powered on as soon as the system starts booting. First of all, BIOS is a bunch of code provided by the manufacturer of the CPU to the Motherboard manufacturer. This is the BIOS you want.BIOS is also called CMOS. Then you go to the HP website, go to support, punch in your model of your AiO then under BIOS UPDATES, you'll see your SSID as one of the entries. In theory, you don't NEED to do all this, you just need the SSID of the motherboard. Once it's been entered successfully, then it can't be changed again. You can use the CTRL+A method anytime to change the info again EXCEPT the feature byte. Go back in & see if it saved the information. Make sure your photo of the Feature Byte is clear, as it has to match EXACTLY, otherwise it won't accept it and you'll have to start again.ħ. Based off your photo's, enter your information for: PRODUCT NAME, SERIAL NUMBER, PRODUCT NUMBER, FEATURE BYTE & BUILD ID. Arrow over to advanced then system id's (I think)Ħ. Go to system information and write down the SSID (eg. Turn on the PC and go into BIOS (F10) then press CRTL+A.ģ. From memory you need to lay it on it's face, then push up the stand a bit to get a camera in there.Ģ. Take a photo of the stickers on the back. Yes - That's the 'tattoo' that's missing.ġ. In summary, you've found the right board, at a reasonable price, so if you're up to replacing it, it's worth excellent that it worked The back cover on those models are clipped on REAL tight. You'll need a flat head screwdriver, or preferably a T15 driver / bit. Swapping the board is easy, just unplug the cables from the board, take out the board, swap out the processor and ram then install the new board and re-connect the cables. Again, this won't stop you from re-installing windows if you have to. You'll see that the part number differs depending on if the board is shipped with no DPK (digital product key) Win home DPK or Win pro DPK. You won't have any licensing / activation issues if you've already got 10 on it. This isn't a deal breaker, but it means that you'll need to install the 'vanilla' Windows 10 from the Microsoft website. Chances are that there's still the original tattoo on the board from whatever machine it was ripped out of, but you won't be able to change the feature byte, which means the HP recovery will probably fail anyway. If you want to be able to perform a HP full factory recovery after you've replaced the board, then you'll need to 'tattoo' the board, otherwise the HP recovery will fail. I've pulled those models apart many times, so if you need assistance in the disassembly, let me know. But they're the same 'family' so it's all good. Differences will be down to CPU, RAM & HDD size. The 23-a200a & 23-a020a share the same mainboard. Here's the detailed specs of the mainboard: Perhaps the seller doesn't know it's made by Quanta. I had a look at that ebay listing and it looks genuine. Board revision shouldn't matter, but the later the revision the better, as there will be 'improvements' to the later versions.
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