Nexus 7 suddenly unrecognized USB device

[tenstrum]

So something weird going on with my Nexus 7. A couple of days ago, my laptop stopped recognizing my Nexus 7 and I'm getting "Unrecognized USB Device".
I've googled the crap out of this. Tried uninstalling/reinstalling drivers through ADB, Nexus 7 Toolkit, and the stand alone downloaded with manual browsing. USB Debugging is enabled. I've rebooted the device and my laptop multiple times. I've followed many different solutions and nothing is working!
Any ideas?
I don't understand why it just stopped being recognized all of a sudden.

 

[bigtroutz]

go to settings > storage > 3 dots at top right > usb > and make sure you are set to Media device (MTP) and not Camera (PTP)

the second thing to ensure is that you use the EXACT SAME USB PORT on the laptop that used to work.

If neither of those work, update your laptop USB drivers from Microsoft... they may have gotten corrupted

 

[tenstrum]

I've tried both MTP and PTP with no luck.
Also tried every USB port including the one that worked originally.
I'll check for USB drivers, but dont believe they have any.

 

[bigtroutz]

I've tried both MTP and PTP with no luck.
Also tried every USB port including the one that worked originally.
I'll check for USB drivers, but dont believe they have any.

yeh, they always do but they generally work well without issues with the default install

Microsoft USB Drivers for Windows XP, Vista & Windows 7

those are USB drivers for XP thru win7

also you should check your cable for cut wires, broken or bent pins etc or simply use a different cable

 

[Groid]

My N7 connected great to my win7-64 pc until one day I picked up the cable to plug in my N7 (cable was already connected to pc) and created a static shock to the microusb end connector on the cable. Plugged it into the N7 and couldn't connect. It wouldn't connect using any of the 4 ports in that bank of ports. Other ports still work and the N7 will connect properly to any port other than the back of 4 that got zapped.

 

[tenstrum]

No luck.
I've tried 2 other PCs and 3 different cables. Still come up as unrecognized device regardless of the correct drivers.
USB Debugging is enable and set to MTP mode.
Any more ideas? Starting to think my Nexus 7 is damaged...

 

[bigtroutz]

USB debugging should NOT be enabled for most uses.

I would give google/asus support a shout and then you will likely need to return it for repair. Sounds like you might have zapped the N7 port with a shot of static or had a chip fail.

I assume you can still charge the N7 so not everything has failed ?

 

[Droid Kitty]

I am unable to see my Nexus 7 via USB but I'm also experiencing issues while charging. It will not charge or recognize anything is plugged into the micro USB when powered on. Only when powered off.

Asus support told me they could not help me and I should contact someone with regards to the OS. Basically, they said it's not their issue and I've already tried all the troubleshooting they recommended.

Are you having this issue, too? What version are you running?

 

[tenstrum]

I can charge without any issues.

 

[TomsAndroid]

Do you guys have passwords on your tablets? My laptop won't pick it up unless I unlock before connecting. I had the same problem. It was working and then it wasn't.

Tom

Sent from my Nexus 7 using Tapatalk HD

 

[tenstrum]

Yes, but that isn't the issue. It detects as an unrecognized device when it gets unlocked.

 

[mr_nobody]

Did you try it with USB debugging turned off yet? Unless you need that turned on for something it should be off.

 

[tenstrum]

Yes. Tried it both ways. I rooted it when i first got the device is why I had it turned on. And before anyone asks, yes it was being recognized after it was rooted. I still have stock Android 4.2.1 on it. This problem just developed about a week ago. I have changed nothing on the tablet.

 

[tenstrum]

Chatted with ASUS today and they recommended a Factory Reset. Don't think it will help, but what have I got to lose.

 

[tenstrum]

Well the factory reset didn't do jack.

 

[majorpayne]

this is not a problem with the N7 this is (95%) a problem with the PC I go through this a few times a month where i have to delete the drivers and then re-add them using WUGs toolkit works every time

 

[tenstrum]

this is not a problem with the N7 this is (95%) a problem with the PC I go through this a few times a month where i have to delete the drivers and then re-add them using WUGs toolkit works every time

I tried WUGs toolkit and it did not work. I have also tried on several other PCs using differnt cables and that did not work either.

 

[tenstrum]

I tried using StickMount to mount a USB drive that i had previously been able to mount to my Nexus and it was unable to see it. Really think my Nexus is broke...

 

[majorpayne]

hmm that does then sound like the N7 has a bad port

 

[patrick06]

I read other threads where people had the same issue. They damaged their nexus usb port using a car charger.
They had to return it back to Asus for repair....

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