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[Q]Phone not detected by computer

Hello everyone, it's been about two weeks since my beloved nexus stopped working with my PC, and I don't know what to do anymore, except for an RMA.
USB Debugging is enabled as well as MTP, i tried with PTP too: results are the same.
I tested on all USB Ports on my computer with 4 cables other than the original one: when connected, the phone does not appear on device manager in windows or in lsusb on linux, except when it is in bootloader mode. It works fine on other pc's, and other Nexus 5's work perfectly fine on my computer (drivers are installed). I formatted my pc and flashed all the available factory images: the problem persists. The only thing i didn't try is connecting it through an usb hub, since I don't have one.
Do you have any ideas? Any help would be appreciated!

Up

Have you checked device manager for an acer device connected? A windows update a while ago seemed to cause this issue
Sent from my Android M Nexus 5 yo!

Yes, i checked with an USB sniffer too and the phone does not generate any events when connected to USB :/

Kryogen said:
Yes, i checked with an USB sniffer too and the phone does not generate any events when connected to USB :/
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Click to collapse
Try using Wugfresh's toolkit.
http://www.wugfresh.com/
Follow the guide to fully uninstall drivers/etc and follow the guide again to install the needed drivers. DO NOT skip steps. If u encounter any problem mid way do post here :good:

Device is not detected. Anyway i don't think it's a driver problem (it would otherwise work on linux, and other nexus 5's wouldn't work with my PC too). Could The phone have "blacklisted" my computer, somehow?
My computer's USB Voltage is 5.04V (checked with a multimeter, my usb chargers have 4.95-5.16 so it's perfectly fine, I guess)
How can i check the data lines?

Down load "Googles" USB driver for windows and install on your pc.
Confirm that you have USB debugging set to "ON" and switch from "MTP" to "Camera" via a search in settings for MTP
Finally check that your Phone is able to recogonize that you have a USB Cable connected...
Keep us posted on how you get on

That's exactly what i did after reinstalling windows on my pc, and as i said in The op, phone works fine on other computers.. I even re locked the bootloader and resetted the tamper flag. Should i contact google for an rma?
Inviato dal mio Nexus 5 utilizzando Tapatalk

You should RMA your computer, not your phone.
Sent from my Nexus 5 using Tapatalk

Why exactly? Other nexus 5's work fine.
Didn't you learn to read the op before posting?

Kryogen said:
Why exactly? Other nexus 5's work fine.
Didn't you learn to read the op before posting?
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Apologies, I missed that.
It doesn't appear on lsusb on Linux? :\ No error/warning message on dmesg/journald?

Nothing, it's as if i didn't connect it... about a month ago i had a problem where while the phone was charging it said no sim card until i unplugged it from AC & rebooted. Could things be related?

Galaxy S6 not recognized on PC or ADB

Dear,
My Galaxy S6 SM-G920F with lollipop 5.1.1
AP : G920FXXU2BOG8
CSC : G920FOJV2BOG8
has stop being recongnized by pc, i almost tries anything i know and find on net.
The pc doesn't recongnise it on device manager (i have a win 7 pc), the phone however react as pluged in a charger.
their is no mtp or mass storage switch on notification.
i have reinstall the driver of samsung several times with smart switch & also made it manual by suppressing directrly the samsung usb driver from programs on control panel then reinstall it but no hope.
I can't figure out eitheir its hard or soft.
i had change my cable & also test my pc with another Galaxy s6 it works fine, but mine no.
i have made wipe cache / factory reset also made an initialisation from parameters the phone is formated but not recognised by the pc also test it on another pc but the same behaviour windows pcs doesn't recognise my phone.
However, i figure out that when its on the restore mode (volume down + lock + home) the pc recognise it by Odin and smart switch.
i install the same rom on it also made an emergency restore with S/N and model and the process completes fine with smart switch and i saw the donwload progress bar completing on my phone.
but still i m stuck its not recognised please help !!!
i tries to use *#0808# and its on AP / MTP + ADB but no hope
i plug it on ADB android studio but the device list is empty :'(

Try installing latest version of Kies to install updated Samsung drivers.

roydok said:
Try installing latest version of Kies to install updated Samsung drivers.
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Click to collapse
I m having both the latest SmartView & Kies 3
i have done as asked but still no usb detection even after reinstalling usb driver

Try using a different USB cable or different USB port.

roydok said:
Try using a different USB cable or different USB port.
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Click to collapse
i used different cables and pcs but still not recognised
yesterday i used odin with those options :
BL/AP/CP/CSC and checked
Auto-reboot
F.reset Time
phone EFS Clear
Phone bootloader update
it has taking some while to execute but after that my phone was working and detectable again by my pc the problem was resolved for a couple of hours, in the evening the problem occured again.
and i have tried the process again the same why but no connection at all.
i don't know if its a hardware problem or software related problem
because the usb work when i m in restore mode (Odin mode) otherwise no.
Its an advance problem i already check all about usb / cable and pcs related problem.

Problem resolved
I sent my S6 to Samsung SAV it take them 4 days.
they doesn't give me proper answers on what they have done but i saw that my mini-usb plug is new so i expect that they got this part changed accrodingly the samsung has no sign of damage its a clean operation.
Its now detectable. It was indeed a Hardware problem

i have the same issue but in a g928f
today i changer my lcd with the micro usb flex
so all is new except the main board and still is not recognised at any pc with any cable.
i am really starting to feel very sorry for this phone.
odin does not see it at all even at download mode.
i don't know what else to do.

Software or Hardware Issue
I have a s6 920t that I am suppose to pay for at the end of the day. I got it from a friend who bought it while overseas. The only time my computer detects it is in download mode/odin mode, I hear the sound and I see it as "Added". When I try to connect any other way I don't hear the sound my laptop makes when it has detected a new device also otg cables don't work. I just simply want to know if this a software or a hardware issue? Software I can fix but if it is hardware I don't want to waste my money. Please anyone reply as soon as you can so I can decide what to do.
Thank you

I have two S6 Edge and one of them started doing this (phone only appears on USB when in Download mode). When swapping the motherboard between the phones, it works. So the problem isn't with the motherboard, but the USB connection module attached with the ribbon cable... There must be a chip on the module which gets locked somehow and replacing the board is at least one way to fix it. Hopefully someone finds another method without replacing the charger board?

USB storage not working in honor 4c

Currently using g play mini.My phone's build number is B160.Android kitkat 4.4.2
Recently cannot connect my phone as usb storage.After connecting to pc with usb cable phone only charges.USB debugging is not showing.(usb debugging is enabled from developer option).what to do?

Kayes360 said:
Currently using g play mini.My phone's build number is B160.Android kitkat 4.4.2
Recently cannot connect my phone as usb storage.After connecting to pc with usb cable phone only charges.USB debugging is not showing.(usb debugging is enabled from developer option).what to do?
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Click to collapse
I have had same problem. But the reason for it happenning was that there was something wrong with my pc usb ports(though the problems only happens when I have phone connected to it). Restarting pc usually fixes it.
No idea will this help.

Hello
ir i've tried restarting the pc couple of times but no result and also tested on another pc and usb cables.
thinking to visiting customer care centre

did you try to factory reset

Rooted now windows 10 doesn't recognize device

I recently rooted my s8+. Now when I connect it to my PC (or even my wife's PC), I get the following on my phone, "Attention: the connected device is unable to access data on this device. Please disconnect the USB cable and try again". I'm using the USB cable that came with my phone and the issue is happeing on 2 different PC's. I have USB debugging checked and set to MTP.

in settings, Switch on Developers options in configuratien. Then there is a USB modus setting. Set it to Charging rather then MTP Transfer.
try another USB cable and update the drivers in device manager.

jidamo said:
in settings, Switch on Developers options in configuratien. Then there is a USB modus setting. Set it to Charging rather then MTP Transfer.
try another USB cable and update the drivers in device manager.
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Click to collapse
Ok, I've tried your suggestions but the problem still persists. What's worse, I unrooted the phone and did a factory reset and it STILL is unable to access the data on the device.

HELP! Can't connect to PC

Hi guys, i'm getting this problem and cant connect to pc and i think i've tried it all.
when i connect my phone to the PC, it stars charging but my pc doesn't recognize the device, and my phone doesn't show the notification to make it file transfer.
Could it be a computer issue?
it seems not, i've uninstalled and installed drivers (ADB and Fastboot, oneplus drivers, google drivers) and the problem persist, and even try it on another computer and its the same, the phone does not appear even on Device Manager.
Could it be the Cable?
I don't think so, i'm using the original oneplus cable, it use to work really well before, and i have even connect other phone with the same cable and the other phone is recognize by the computer, so it''s not a cable issue... but I still when to a Tech-store and try other USB-C cables with their computer but my issue still persist (phone isn't recognize, just charge).
Could it be a phone software issue?
Maybe? but i discover this issue 3 weeks ago and a i was on EVOX rom and i thought it would be solved flashing another rom, and i CLEAN FLASH Resurrection Remix Rom, but then the problem was still there!
cant connect even on FASTBOOT MODE...
BTW, before installing RR, i Installed OOS 10.3.4, and still my computer doesnt recognize the phone, YES i have enabled developer options and USB debugging is enabled, and USB PREFERENCES to File transfer, but its not helping me, the "usb for" option its all grayed out and cant change that.
Right now i'm stuck on a RR build without Gapps, and i lost ROOT and RECOVERY, and as you may think, i cant install any of them because i cant connect to my pc, so i'm in a pretty difficult situation here hehe, could you please help me out?

This helped me. Hope it works for you too
I can't paste the link but search "how to get your Android device to show up in file explorer" by how to geek.

Didn't work
xnruaa said:
I can't paste the link but search "how to get your Android device to show up in file explorer" by how to geek.
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Thanks for your reply, but this didn't work because my device isn't shown on device & printers, or anywhere as far as i checked...

PROBLEM SOLVED.
I think this is the silliest solution I've ever seen, it was just DUST, i clean my USB-C PORT (with a mask xD) and then pluggin, AND VOILA, it worked!!! so keep your ports clean everyone