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X870E Taichi Lite Ethernet Issue |
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michalsti 
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Joined: 12 Jul 2025 Status: Offline Points: 75 |
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 Posted: 12 Jul 2025 at 5:15pm |
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Guys I had same problem with my X870 Taichi. One day suddenly my LAN stopped working. No solution would work, I ended up buying USB->Ethernet dongle.
Some time later my Bluetooth stopped working, just gone from system. Tried all, reinstalling, BIOS etc. All seemed fine but it just wasn't there. AND! I found a solution in a different topic on this board by someone using older board years ago. THE SOLUTION IS: Unplug the power cable completely, leave the PC for a couple minutes like that, discharge all that might be left. Then reconnect the power cable to PSU and both LAN and BT are back! |
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Prognoz
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Joined: 16 Nov 2025 Status: Offline Points: 15 |
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Posted: 16 Nov 2025 at 12:35am |
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@michalsti solution works, thank you so much for providing the solution!
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Basemath
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Joined: 31 May 2026 Location: KSA Status: Offline Points: 45 |
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Posted: 31 May 2026 at 12:09am |
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@michalsti Brooo i'm just a guy who created an account to tell another guy I LOVE YOU. Thanks I wish you all the best!
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Xaltar
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Joined: 16 May 2015 Location: Europe Status: Offline Points: 43023 |
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Posted: 31 May 2026 at 1:16am |
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Awesome, that is exactly what these forums are here for. Not only to ask for help
but also as a repository of advice and tips to be used. I have made the thread a sticky post so it is easier for others to find. |
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Basemath
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Joined: 31 May 2026 Location: KSA Status: Offline Points: 45 |
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Posted: 01 Jun 2026 at 2:48am |
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Thanks Xaltar. This repository directly saved me money I needed. I'll give more context in case others go through similar sympotoms.
Problem started with Ethernet rapidly disconnecting then connecting for like a minute straight, then it's ok for the rest of the day. This happened daily for a couple of weeks until it suddenly decided to just remain disconnected with a "network cable unplugged" status like OP. No amount of troubleshooting worked. New cable didn't work. Was about to buy a USB Ethernet dongle but a last Googling lead me to this thread. Full power disconnect restored functionality on first try. Hopefully this isn't a sign for a dying network adapter. |
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Xaltar
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Joined: 16 May 2015 Location: Europe Status: Offline Points: 43023 |
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Posted: 01 Jun 2026 at 4:32am |
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That is great to hear. As for it being a sign of anything, I doubt it or the person
who shared the fix would likely have posted back here. It's more likely that something in the LAN's firmware got corrupted, a power cycle (full disconnect from mains and power switch pressed and held for a few seconds) would be the only way to clear corrupted values in the LAN's ROM. It could be caused by something as simple as a marginal/faulty cable sending bogus data or even a bit of debris/corrosion on one of the connector's pins. |
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Winterfresh
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Joined: 06 Oct 2026 Location: Uk Status: Offline Points: 30 |
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Posted: 06 Oct 2026 at 12:58pm |
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I got slightly different issue , with 2gbs broadband every day or two my Ethernet capping speed to aprox 600mbps.Thing still occurring even after disabling power saving features , installing different drivers directly from Realtek website , does engine had this kind of issues with x870e Taichi lite.The only thing I didn£™t tried yet is to upgrade bios , I£™m still on 4.20
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Xaltar
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Joined: 16 May 2015 Location: Europe Status: Offline Points: 43023 |
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Posted: 06 Oct 2026 at 1:37pm |
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Hello Winterfresh. You should call your ISP and get them to check your line before
you look at anything else. I have had similar issues many times myself and every time it turned out to be poor maintenance by my ISP. |
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Winterfresh
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Joined: 06 Oct 2026 Location: Uk Status: Offline Points: 30 |
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Posted: 8 hours 54 minutes ago at 8:06pm |
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I was mate , the issue is my 1,8gbs broadband coming with broadband supplier branded router and extender , BT smarthub 7pro.
After reading in several sources the connection conflicts with this particular router is a common thing . When tried external pcie intel network card everything works ok , but because 2 pcie slots on x870e sharing lines my 5090 gpu going down to x8 speeds. Will try to update bios today , maybe newer version providing some kind of improvements for Realtek chip |
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Xaltar
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Joined: 16 May 2015 Location: Europe Status: Offline Points: 43023 |
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Posted: 7 hours 41 minutes ago at 9:19pm |
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I see what you are saying. I take it you tried pulling power from the system, discharging
by holding the power button and removing the CMOS battery already£ Failing that, maybe try opening a support ticket with ASRock directly, they may be able to sort you out with a custom BIOS fix: https://tw.asrock.com/events/tsd.asp£kind=MB |
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