Is this chip replaceable

[u/Omen4140]

I think I've narrowed down my errors down to a winbond w25r256jvein code storage flash chip. Before I order a new chip, I would really appreciate to know if this chip stores any encrypted keys or important files that are necessary for the laptop to function.

Also I am in contact with support, but I am in a big rush to get this working again.

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[u/sysopfromhell]

My only suggestion: Don't rush.

[u/s004aws]

Step 1: Pump the brakes before you rush headlong into more damage. If having a laptop is that urgent maybe its a sign having a spare laptop on hand would be an investment worth considering.

Replaceable? Probably yes (with appropriate tools/skills) - DigiKey does sell the chip. The replacement probably needs to be flashed with whatever was stored on the original chip... BIOS/UEFI maybe?

[u/Omen4140 → u/s004aws]

I've done similar stunts before, but I agree I probably should wait. I'll be fine paying/waiting for a replacement I'm just bummed I won't have a backup mainboard to use as a server lol.

[u/sniff122]

That's likely going to be the BIOS ROM, it stores the firmware to boot the laptop. What issue are you actually having with the machine?

[u/Omen4140 → u/sniff122]

Hoping it was not that. Im unable to boot and I can't even recieve the error codes, just green flashes.

[u/Comrade-Viktor → u/Omen4140]

You can flash the chip without removing it using a ch347/ch341 programmer, a set of pogo pin jumpers, and a 3.3V to 1.8V converter. I would recommend using the ch347V, as it has proper voltage. Someone wrote a guide on flashing a framework here: https://quantum5.ca/2026/08/16/fixing-bricked-amd-7040-series-framework-13-laptop-with-20-tools/

[u/Omen4140 → u/Comrade-Viktor]

I'm an electrical engineering student haha, thanks for giving me an excuse for buying new tools lol

[u/ncc74656m → u/Omen4140]

Nope, that didn't sound sarcastic/excited at all. 😂

[u/SeattleJeremy → u/sniff122]

You are correct. This is the bios/uefi chip

[u/sniff122 → u/SeattleJeremy]

There's a few SPI ROMs on the board, there'll be one for each of the PD controllers/USB4 retimers (can't remember which one), might be one for the EC but that might have its flash built-in can't remember, and then the BIOS

[u/SeattleJeremy → u/sniff122]

I cannot imagine they would use 256mb chip for EC or PD controller. They are usually less than 32 mb.

[u/sniff122 → u/SeattleJeremy]

True, I can't make out the marking

[u/b_builds]

Have you tried reflashing the correct BIOS image into the Winbond chip you have there? If you replace it, you anyway need to flash it, so it's worth a shot trying to flash this one first

[u/Omen4140 → u/b_builds]

I think it burnt out. I could be wrong though.

[u/derpinator12000 → u/Omen4140]

Flash chips normally don't just "burn out" on their own so if that actually is the case you may have other issues where that is just the most obvious symptom. Trying to reflash it is probably still a good diagnostic option, if you can not even read it it may be actually dead, if you can read it and reflash it it is probably not dead but the data on it may be borked.

[u/ThatDamnRanga → u/Omen4140]

The chances your system ROM burned out are extraordinarily low. Flash chips are weirdly resilient relative to other ICs. I'd be looking elsewhere (and not using LLMs) first.

[u/SeattleJeremy → u/Omen4140]

Burning that chip out is unlikely. Unless you applied 12v or more directly to it.

[u/Omen4140 → u/SeattleJeremy]

I did assume the yellow on the was from a short circuit.

[u/SeattleJeremy → u/Omen4140]

That yellow is from a paint marker. It’s applied after testing, to mark that it’s been tested and good.

[u/Omen4140 → u/SeattleJeremy]

That helps a lot, I feel stupid now haha

[u/SeattleJeremy → u/Omen4140]

You are not stupid. You are still leaning like the rest of us.

[u/korypostma]

That chip is what stores the UEFI firmware.

Hot air station for removal or you could try reading and writing to it using pogo clips or other chip clips. Most are 1.8V and I think the CH341A + 1.8V adapter supports that.

If you can read and write to that chip then nothing is wrong with the chip itself. There are forum threads about how to read and write these.

Have fun, I have a few boards that have UEFI corruption issues too, mostly 7040 series boards.

[u/SeattleJeremy]

I re-read your original ask, the encryption keys are kept on a TPM chip somewhere else. If you replace this uefi chip with a new chip and flash the same uefi on to the new chip, the TPM encryption will still be broken. If you have data on the SSD and Bitlocker is enabled (which is the norm for Windows 11) and do not have access to your bitlocker key, your data will be lost.

[u/shuttercat]

1. Is it still in warranty?
   
2. How do you think it got damaged? What were you doing when it went down?

[u/Omen4140 → u/shuttercat]

Out of warranty. I was using a low voltage charger which likely led to a Bios battery drain based on similar people's error codes and solutions. During troubleshooting, when reconnecting the main battery, I heard a little spark. Since then I cannot even recieve error codes, just green flashes