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T420 disconnects from wifi

T400/T410/T420 and T500/T510/T520 Series
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deickos
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Posts: 79
Joined: Wed Apr 20, 2011 5:54 am
Location: athens, greece

T420 disconnects from wifi

#1 Post by deickos » Tue May 12, 2026 5:52 pm

random disconnects in win 7 - has anyone experienced this ? there were no matches when i searched the forum
have installed intel proset wifi
T500 - T9600, 8g ram, 1680x1050
T420 - 2450M, 16g ram, 1366x768
X61t - L7500, 4g ram, 1024x768
W520 - 2760QM, 16g ram, 1920x1080
X201 - 560M, 8g ram, 1280x800

RealBlackStuff
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Joined: Mon Sep 18, 2006 5:17 am
Location: Loch Garman, Éire

Re: T420 disconnects from wifi

#2 Post by RealBlackStuff » Wed May 13, 2026 1:18 am

Wifi cards like 6250-N or 6300-N do not have eternal life...
Wifi-N is also getting a bit outdated, maybe look at wifi-6, such as MPE-AX3000H.
Lovely day for a Guinness! (The Real Black Stuff)
But I actually prefer Murphy's from Cork!

deickos
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Posts: 79
Joined: Wed Apr 20, 2011 5:54 am
Location: athens, greece

Re: T420 disconnects from wifi

#3 Post by deickos » Wed May 13, 2026 5:01 pm

RealBlackStuff wrote:
Wed May 13, 2026 1:18 am
Wifi cards like 6250-N or 6300-N do not have eternal life...
Wifi-N is also getting a bit outdated, maybe look at wifi-6, such as MPE-AX3000H.
i bought the T420 in 2016 new and until late 2023 only used it randomly with battery - i don't see how the wifi card gave out
it seems to me you have a tendency to always pick the worst case scenario

for starters i reinstalled the driver - if it persists i will look the wifi-N
T500 - T9600, 8g ram, 1680x1050
T420 - 2450M, 16g ram, 1366x768
X61t - L7500, 4g ram, 1024x768
W520 - 2760QM, 16g ram, 1920x1080
X201 - 560M, 8g ram, 1280x800

RealBlackStuff
Admin Emeritus
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Posts: 24739
Joined: Mon Sep 18, 2006 5:17 am
Location: Loch Garman, Éire

Re: T420 disconnects from wifi

#4 Post by RealBlackStuff » Thu May 14, 2026 12:21 am

It is not always (lack of) usage, quite often it is ageing that causes the problem.
Lovely day for a Guinness! (The Real Black Stuff)
But I actually prefer Murphy's from Cork!

axur-delmeria
Senior ThinkPadder
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Posts: 4425
Joined: Mon May 28, 2012 5:49 am
Location: Metro Manila, Philippines

Re: T420 disconnects from wifi

#5 Post by axur-delmeria » Thu May 14, 2026 1:46 am

Electronic components like capacitors, diodes, etc. go out-of-spec with age. Electrolytic caps drying out, tantalum caps blowing up, that sort of thing. :o
Planned Purchase: T480s i5-8350 FHD Touch
Impulse Buy: Thinkpad not named for safety reasons :lol:
RIP: X220 4291-C91 X61 7676-A24 760XD-U9E :cry:

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