Missing sensors

[bicben]

A brand new 5070 Zotac Solid OC on a Biostar group B650MT

Fans always work in either 100% or they're idle, can't control them in any way. The afterburner shows mere 30% rotation.

[MiyouQ]

PawnIO code39

[bicben]

PawnIO code39

I've already installed PawnIO but I have no idea what is the code39

[MiyouQ]

PawnIO code39

I've already installed PawnIO but I have no idea what is the code39

Just now, my fancontrol encountered the same issue. In the Device Manager, pawnIO displayed an exclamation mark, reporting a code 39 error

[Rem0o]

@bicben

Any logs.txt? What version of PawnIO do you got installed?

[ATFieldBeast]

@bicben

Any logs.txt? What version of PawnIO do you got installed?

Two of my PC with FanControl 245 and PawnIO 2.0.1.0 happened the same issue just now when I reboot my pc(before reboot everything just work fine, I don't know maybe the Windows did something, but I stop the Windows Update already), update PawnIO to 2.1.0.0 only still Missing, so I have to delete the FanControl and unzip the V262(I use the zip version), finally work. But I delete the folder so I don't have logs.txt

[ATFieldBeast]

Wait, I found that even if I stop the Windows Update, some Security platform Update still install on my PC today, but because there is none any other Update, this is the only different on my PC before and after reboot

[Rem0o]

So you were on V245?

PawnIO 2.1.0 only was supported with V259 and up. That would explain it.

[ATFieldBeast]

So you were on V245?

PawnIO 2.1.0 only was supported with V259 and up. That would explain it.

No, as I mentioned, I was previously using v245 with PawnIO 2.0.1.0, and everything was working fine before the reboot. It was only after the reboot that this error suddenly appeared. Then I tried updating PawnIO and FanControl separately, and it didn't return to normal until I used 2.1.0.0 with v262. In other words, the original combination of v245 + 2.0.1.0 also encountered this error after install the Security platform Update and reboot

[Duceowen]

I'm on V262 with PawnIO installed and I just updated to the newest AMD Chipset version 8.02.18.557

After the update I my 9070 XT won't show up anymore tried to disable zero rpm and all the normal things but it won't detect. I believe AMD changed something with their fans in the update.

[vload]

did a full reinstall of pawnio 2.1.0 and v262 and this shows up, It did work previously but i do not know which version it is.

logs:
[V262] 3/11/2026 2:42:47 PM: Try refresh failed. Retry count (6) exceeded. Sensor validation failed: The following sensors are missing: ADLX/AMD Radeon RX 7900 XT/768/temp/Hotspot ADLX/AMD Radeon RX 7900 XT/768/control ADLX/AMD Radeon RX 7900 XT/768/fan [V262] 3/11/2026 2:42:47 PM: Startup - System.Exception: Try refresh failed. Retry count (6) exceeded. ---> System.Exception: Sensor validation failed: The following sensors are missing: ADLX/AMD Radeon RX 7900 XT/768/temp/Hotspot ADLX/AMD Radeon RX 7900 XT/768/control ADLX/AMD Radeon RX 7900 XT/768/fan --- End of inner exception stack trace ---

It does look like the above comment might be right and AMD changed something.

[ssjrocks]

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something else going on for me... rolled back to a known good version and fan control still tripping balls... dont think ive done a windows update... will come back if i find a cause
wonder if anyone else had signalrgb update at same time as fan control like i did? .... i did all my testing with signalrgb shut down.... but im not an expert haha

seems to be all the nuvoton NCT6701d sensors and controls that have failed for me

i give up ... ive rolled back to way earlier versions and in my attempts to figure out the problem, it appears since this update my nct6701d related sensors and controls have stopped talking to any and all software...even librehardware monitor is now showing 0 sensors for my motherboard.... i dont know which software is to blame but it feels like something has damaged my motherboard and these sensors are just completely inaccessible, i uninstalled all monitoring software signalrgb fancontrol (have not had armory crate installed for over a year) and tried a fresh install of fan control 245 and it just seems completely borked

ok so i just found out about this pawnio crap.... uninstalled and reinstall and it all works again... rolling back to winring0.... this hiccup caused me to lose hours of setups for multiple programs... gg

[vload]

Back here again, updating my GPU drivers seems to have fixed the issue.

[Spuner]

I confirm that this is indeed an issue. However, as I've noticed, it doesn't always occur, and most likely only happens after the OS wakes up from sleep. I suspect this started after the PawnIO update.

Logs and Screenshot

[V249] 11/23/2025 12:54:45 AM: LHM detected new sensors and asked for a refresh: /lpc/nct6798d/voltage/6

[V249] 11/25/2025 10:08:11 PM: LHM detected new sensors and asked for a refresh: /lpc/nct6798d/voltage/6
[V249] 11/26/2025 1:19:10 AM: LHM detected new sensors and asked for a refresh: /lpc/nct6798d/temperature/3
[V250] 11/26/2025 6:38:53 PM: LHM detected new sensors and asked for a refresh: /lpc/nct6798d/voltage/6
[V251] 12/7/2025 11:48:56 PM: LHM detected new sensors and asked for a refresh: /lpc/nct6798d/voltage/6
[V251] 12/13/2025 11:20:23 PM: LHM detected new sensors and asked for a refresh: /lpc/nct6798d/voltage/6
[V251] 12/20/2025 8:25:33 PM: LHM detected new sensors and asked for a refresh: /lpc/nct6798d/voltage/6
[V251] 12/21/2025 9:23:15 AM: LHM detected new sensors and asked for a refresh: /lpc/nct6798d/voltage/6
[V251] 21.12.2025 9:23:35 AM: Try refresh failed. Retry count (6) exceeded.
Sensor validation failed: The following sensors are missing:
/lpc/nct6798d/voltage/6
[V251] 12/21/2025 9:26:34 AM: LHM detected new sensors and asked for a refresh: /lpc/nct6798d/voltage/6
[V251] 21.12.2025 5:11:25 PM: Try refresh failed. Retry count (6) exceeded.
Sensor validation failed: The following sensors are missing:
/lpc/nct6798d/voltage/6
[V251] 12/21/2025 5:12:51 PM: LHM detected new sensors and asked for a refresh: /lpc/nct6798d/voltage/6
[V252] 12/22/2025 1:23:57 AM: LHM detected new sensors and asked for a refresh: /lpc/nct6798d/temperature/3
[V253] 1/13/2026 1:30:32 AM: LHM detected new sensors and asked for a refresh: /lpc/nct6798d/temperature/3
[V255] 1/25/2026 10:41:40 AM: LHM detected new sensors and asked for a refresh: /lpc/nct6798d/temperature/3
[V255] 25.01.2026 5:31:00 PM: Try refresh failed. Retry count (6) exceeded.
Sensor validation failed: The following sensors are missing:
/lpc/nct6798d/temperature/3
[V255] 1/31/2026 8:38:22 PM: LHM detected new sensors and asked for a refresh: /lpc/nct6798d/temperature/3
[V255] 31.01.2026 11:09:15 PM: Try refresh failed. Retry count (6) exceeded.
Sensor validation failed: The following sensors are missing:
/lpc/nct6798d/temperature/3
[V255] 31.01.2026 11:13:33 PM: LHM detected new sensors and asked for a refresh: /lpc/nct6798d/temperature/3
[V258] 2/10/2026 6:43:36 AM: LHM detected new sensors and asked for a refresh: /lpc/nct6798d/temperature/3
[V260] 2/17/2026 11:49:24 PM: LHM detected new sensors and asked for a refresh: /lpc/nct6798d/temperature/3
[V262] 07.03.2026 7:03:58 PM: LHM detected new sensors and asked for a refresh: /lpc/nct6798d/temperature/3
[V262] 19.03.2026 8:57:06 AM: LHM detected new sensors and asked for a refresh: /lpc/nct6798d/temperature/3