I decided to replace the system board and everything is fine now! Was actually a lot easier than I expected it to be too. Awesome how user-serviceable these laptops are! Answer from tommiehaze on reddit.com
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Reddit
reddit.com โ€บ r โ€บ thinkpad โ€บ comments โ€บ 9cvh9z โ€บ lenovo_x240_331_beep_code_after_trackpad
r/thinkpad - Lenovo x240: 3-3-1 beep code after trackpad replacement from x250
September 4, 2018 -

Hi, i replaced my x240s trackpad with a new one from a x250. after the replacement i get an 3-3-1 beep code and cannot boot anymore. when i unplug the ribbon cable, system boot without any issues. when i connect the old x240 trackpad (i damaged the touchpad surface but the connector is fine, the same beep error comes up.

Because of this i bought a new trackpad ribbon cable (part no. 04Y1660) but the 3-3-1 beep still appears. Are there different trackpads of x250 (i heard there are alps as well as synaptic) or have anybody an idea for me what to do?

Thanks

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Reddit
reddit.com โ€บ r/thinkpad โ€บ x240 3-3-1 post beep code, but works sometimes... is it dead?
r/thinkpad on Reddit: X240 3-3-1 POST beep code, but works sometimes... is it dead?
February 9, 2021 -

Hi guys,

First post here so sorry if I accidentally break any rules!

My X240 has this weird issue where it'll do a 3-3-1 post beep and refuse to start up, which I have read is RAM or mobo related.

But... if I open it up, take the RAM out, blast the RAM socket with compressed air and put it all back together, it seems to boot fine and work for a couple of restarts, until it goes back to the 3-3-1 code.

Is there anything else I should try that might offer a more sustainable solution? I love this little thing but I really can't justify taking her apart all the time just to get her to boot!

Thanks in advance fo any advice!

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Lenovo Community
forums.lenovo.com โ€บ t5 โ€บ ThinkPad-X-Series-Laptops โ€บ X240-black-screen-on-start-up-with-3-3-1-short-beeps โ€บ td-p โ€บ 4251864
X240-black-screen-on-start-up-with-3-3-1-short-beeps - English Community - LENOVO COMMUNITY
October 28, 2018 - Hi, a touchpad froze on my x240 and after restart, the notebook doesn't boot up. There is only a black screen and the computer beeps 3 times shortly, again 3 times shortly and one time after that. Did anyone experienced the same problem?
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YouTube
youtube.com โ€บ watch
Lenovo Thinkpad X200/X220/X230/X240 Series - Black Screen with 1-3-3-1 Beeps - Quick Fix/Workaround - YouTube
This is a quick fix/workaround if you have a black screen with 1 beep, 3 short beeps,3 short beeps, and 1 beep on your Lenovo Thinkpad X200/X200S/X220/X230/X...
Published ย  June 1, 2022
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Thinkpads Forum
forum.thinkpads.com โ€บ viewtopic.php
Reversing a replaced X250 Trackpad with original Trackpad - Get 1-3-3-1 beeps when booting up - Thinkpads Forum
February 24, 2019 - OK, so I have finally worked this one out. In changing the X240 "upgraded" 3 button Trackpad to the original "clunkpad" I managed to damage the ribbon cable but ALSO the motherboard. I know this as a new ribbon cable still made the dreaded 1-3-3-1 beep. I got hold of another cheap refurb X240 device and put that motherboard into my machine - and 100% worked.
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ManualsLib
manualslib.com โ€บ brands โ€บ lenovo manuals โ€บ laptop โ€บ laptop โ€บ user manual
Beep Errors - Lenovo ThinkPad X240 User Manual [Page 138] | ManualsLib
September 1, 2014 - Lenovo ThinkPad X240 Manual Online: Beep Errors. Table 7. Beep errors Problem One short beep, pause, three short beeps, pause, three more short beeps, and one short beep One long and two short beeps Four cycles of four short beeps Five short beeps 122 User Guide Solution Have the...
Find elsewhere
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Thinkpads Forum
forum.thinkpads.com โ€บ viewtopic.php
BIOS beeps 1-3-3-1 when rebooting - Thinkpads Forum
October 26, 2013 - In a lot of cases this in not ram related, it is motherboard related. The issue is a cold solder joint. There is a quite a simple fix for this if your are mechanically inclined or a little curious. Regardless this fix is not only proven and tested by myself on various computer including a Lenovo ...
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Badcaps
badcaps.net โ€บ home โ€บ forum โ€บ troubleshooting hardware & devices and electronics theory โ€บ troubleshooting laptops, tablets, and mobile devices
lenovo X240 sometimes it does not start - Badcaps
August 9, 2021 - Re: lenovo X240 sometimes it does not start Asking again, is schematic avlbl?? Measure voltage & resistance on all coils. Consumption on dc supply with ram/without ram? ... 1) Remove the ram - power up - do you hear the same beeping pattern ? 2) Guessing that you will.
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Thinkpads Forum
forum.thinkpads.com โ€บ viewtopic.php
Can a damaged CPU cause the 1-3-3-1 beep error? - Thinkpads Forum
November 20, 2017 - Without a CPU installed, the power light just blinks on and off. Fun fact, the CPU in the second motherboard (never tested by me before, and tested after the first one) also gives the 1-3-3-1 beep code with or without good RAM installed, exact same symptoms as the previously working complete T420.
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Digital Spy
forums.digitalspy.com โ€บ pc & mac hardware and software
Thinkpad Beep Code 1-3-3-1 โ€” Digital Spy
February 15, 2006 - I'm looking at a Thinkpad T23 which does nothing but issue beep code 1-3-3-1. According to Lenovo, that means memory or system board failure. Replaced memory - still the same. Removed RAM (!) - still the same.
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Thinkpads Forum
forum.thinkpads.com โ€บ viewtopic.php
Thinkpad X240 Beep code help. - Thinkpads Forum
July 30, 2019 - X240 needs low-voltage (1.35V, DDR3L) RAM, yours doesn't seem that type. On pic-1 that cable goes partly to the -pad, partly to the fingerprint reader, and partly somewhere I don't know, but I wouldn't worry about it. (I have three X240 machines, none with that cable).
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Lenovo Community
forums.lenovo.com โ€บ t5 โ€บ ThinkPad-X-Series-Tablet-and โ€บ X220-1-3-3-1-short-beep-and-screen-off โ€บ m-p โ€บ 4130230
English Community-Lenovo Community
July 4, 2018 - Welcome to Lenovo and Motorola community. If the website doesn't work properly without JavaScript enabled. Please enable it to continue
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Quora
quora.com โ€บ How-do-I-solve-a-PC-Beep-Code-1-3-3-1-Problem
How to solve a PC Beep Code 1-3-3-1 Problem - Quora
Answer (1 of 7): Problem Details: I have an old HP Pavilion 9800 desktop that I have not used in over a year. This computer was working fine when I stopped using it, and replaced it with a new desktop. Upon recently plugging my old computer in and turning it on, I received a 1-3-3-1 beep code, ...
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Thinkpads Forum
forum.thinkpads.com โ€บ viewtopic.php
T430s Won't boot, randomly 1-3-3-1 beep code - Thinkpads Forum
April 20, 2019 - Remove the RAM from one slot, then try to boot. If it beeps 1-3-3-1, swap the RAM module in the same slot and try to boot. If it beeps with either RAM module, that slot is at fault. Do the same in the other slot. Have you got the correct RAM, PC3-10600 (DDR3-1333)?
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Lenovo Community
forums.lenovo.com โ€บ t5 โ€บ ThinkPad-L-R-and-SL-series โ€บ annoying-L430-1-3-3-1-beep-issue โ€บ m-p โ€บ 3671320
Re: annoying L430 1-3-3-1 beep issue
Welcome to Lenovo and Motorola community. If the website doesn't work properly without JavaScript enabled. Please enable it to continue
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MyFixGuide
myfixguide.com โ€บ home โ€บ laptop tips
Computer Beep Codes and Solutions on Lenovo, HP, Dell, Asus
July 2, 2022 - Computer beep codes on startup, including AMI, Award, Dell, HP, Lenovo, Asus, and Thinkpad BIOS beep codes, error messages, and fix methods.