No USB connection to computer. - AT&T LG Optimus G

My LG E970 does not have an usb connection to the computer.
I tried connecting in fastboot and ADB via command prompt, the computer does not see it.
It says slow charging when connected to a computer, 2 different computers.
I have the LG united drivers installed, reinstalled and rebooted.
I was on 4.4 and I did a restore to stock ATT 4.1.2, still no luck.
I'm out of ideas.
EDIT:
I tried LGNPST from: http://pastebin.com/bRpR3aB6
I put it into download mode and the phone shows "DOWNLOAD MODE" "DO NOT UNPLUG the device until the process is complete"
It only shows that, LGNPST does not detect anything.

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edroit said:
My LG E970 does not have an usb connection to the computer.
I tried connecting in fastboot and ADB via command prompt, the computer does not see it.
It says slow charging when connected to a computer, 2 different computers.
I have the LG united drivers installed, reinstalled and rebooted.
I was on 4.4 and I did a restore to stock ATT 4.1.2, still no luck.
I'm out of ideas.
EDIT:
I tried LGNPST from: http://pastebin.com/bRpR3aB6
I put it into download mode and the phone shows "DOWNLOAD MODE" "DO NOT UNPLUG the device until the process is complete"
It only shows that, LGNPST does not detect anything.
Click to expand...
Click to collapse
From there you need to select the ls970.dll and the bin file in lgnpst.
Sent from my Optimus G using xda app-developers app

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mikeylikey said:
From there you need to select the ls970.dll and the bin file in lgnpst.
Sent from my Optimus G using xda app-developers app
Click to expand...
Click to collapse
It won't let you select anything unless something is detected. Example: "UNKNOWN PORT 01"
And nothing is detected.

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edroit said:
It won't let you select anything unless something is detected. Example: "UNKNOWN PORT 01"
And nothing is detected.
Click to expand...
Click to collapse
Try Kush's universal adb drivers for windows. If you are running Win8.1, make sure it's usb2.0 and not 3.0. If it still doesn't see it, try a different windows os.
Sent from my Optimus G using xda app-developers app

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mikeylikey said:
Try Kush's universal adb drivers for windows. If you are running Win8.1, make sure it's usb2.0 and not 3.0. If it still doesn't see it, try a different windows os.
Sent from my Optimus G using xda app-developers app
Click to expand...
Click to collapse
I tried the different drivers, still "slow charge mode on the phone." It is suppose to pop up that USB debugging notification on the phone if it senses a computer connection. I'm using windows 7 and usb 2.0 only. Tried on different computer, still slow charging mode.

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did you turn on "usb debug" in setting->Develop options?

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savingwizard said:
did you turn on "usb debug" in setting->Develop options?
Click to expand...
Click to collapse
Yes, it is on. Still only "slow charging mode"

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Still not working after I flashed SnowLepoardJB's 800MB+ stock ROM. Any other suggestions?

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Hi, I'm joining this thread since I have the same problem... My phone charges, but no device connection. Could there be a kernel module missing? Is there a way to check? A #lsmod type command?
Sent from my JY-G3 using xda app-developers app

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Ok... I got a new USB cord and it works now.
Sent from my JY-G3 using xda app-developers app

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brainstormtrooper said:
Ok... I got a new USB cord and it works now.
Sent from my JY-G3 using xda app-developers app
Click to expand...
Click to collapse
Good for you. I tried different USB cords, and it still doesn't work.

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Well, if you can select USB debugging and charge the phone over USB, but the phone doesn't notice the computer then it may be a damaged USB port... I saw a thread about that on a Kindle I think... But it sounds like software isn't the problem... Good luck.
Sent from my JY-G3 using xda app-developers app

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I recently had the same problem and my solution was to use the Koush Universal ADB Driver recommended by someone else. Prior to that all I could see the contents of my SD card and external SD card on the computer but always had some sort of driver issues and Windows telling me my driver wasn't installed correctly.
Using the official LG driver from the website didn't seem to help either.

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OK... I know this thread has gotten old, but here's the final deal... It wasn't "exactly" the USB cables. It WAS the plug. The plug wasn't broken, just very dirty. I cleaned it out with a toothpick and now even the old cord works fine... So if you can't get the computer and phone to recognize each other, try cleaning the micro port in the phone
Sent from my JY-G3 using XDA Free mobile app

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can't connect in download mode with Windows 8.1
brainstormtrooper said:
OK... I know this thread has gotten old, but here's the final deal... It wasn't "exactly" the USB cables. It WAS the plug. The plug wasn't broken, just very dirty. I cleaned it out with a toothpick and now even the old cord works fine... So if you can't get the computer and phone to recognize each other, try cleaning the micro port in the phone
Sent from my JY-G3 using XDA Free mobile app
Click to expand...
Click to collapse
My issue is that I can't connect to my computer with Windows 8.1 in Download Mode. If I want to flash, I need to find a friend who is using Windows 7. Can anybody help with this?
Other details: I've tried cleaning the ports, using another cable, using other USB connections, etc. When in Download Mode, SDK can't even detect the device. I'm pretty sure it's the fact that I'm using Windows 8.1, but I don't know what to do to fix this problem.
Thanks!

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billp000 said:
My issue is that I can't connect to my computer with Windows 8.1 in Download Mode. If I want to flash, I need to find a friend who is using Windows 7. Can anybody help with this?
Other details: I've tried cleaning the ports, using another cable, using other USB connections, etc. When in Download Mode, SDK can't even detect the device. I'm pretty sure it's the fact that I'm using Windows 8.1, but I don't know what to do to fix this problem.
Thanks!
Click to expand...
Click to collapse
Not sure why you want to put your phone in download mode
If your just trying to connect your phone via USB to mount storage (meaning getting file off the internal storage and sd card), it should work fine.
If your trying to root your phone, you need to grab the android sdk and use the adb commands.

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Gysper said:
Not sure why you want to put your phone in download mode
If your just trying to connect your phone via USB to mount storage (meaning getting file off the internal storage and sd card), it should work fine.
If your trying to root your phone, you need to grab the android sdk and use the adb commands.
Click to expand...
Click to collapse
The reason is that my phone is "bricked." I'm caught in a boot loop. The bootloader is locked on my LG phone so I can only get into Download Mode to fix stuff. But I can't fix stuff if my computer doesn't recognize my device. (I can connect fine when my phone boots up properly; just not in Download Mode). I've installed and uninstalled the LG drivers many times, so this is not the issue. What can I do with my Windows 8.1 computer to connect with my phone in Download Mode? Again, I CAN connect to Windows 7 computers, but I don't have one convenient to use, and I don't want to install lots of software on friends' computers...

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billp000 said:
The reason is that my phone is "bricked." I'm caught in a boot loop. The bootloader is locked on my LG phone so I can only get into Download Mode to fix stuff. But I can't fix stuff if my computer doesn't recognize my device. (I can connect fine when my phone boots up properly; just not in Download Mode). I've installed and uninstalled the LG drivers many times, so this is not the issue. What can I do with my Windows 8.1 computer to connect with my phone in Download Mode? Again, I CAN connect to Windows 7 computers, but I don't have one convenient to use, and I don't want to install lots of software on friends' computers...
Click to expand...
Click to collapse
Try these steps and see if it works: http://forum.xda-developers.com/showthread.php?t=2013067

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Gysper said:
Try these steps and see if it works: http://forum.xda-developers.com/showthread.php?t=2013067
Click to expand...
Click to collapse
That is what I would like to be able to do, but it assumes your device is recognized. One of the other posts on the same thread mentioned a similar issue but didn't mention a solution.
I've done some more exploring. I have, again, uninstalled and reinstalled the appropriate LG E970 drivers from the LG support site.
- When I am in fastboot mode, I see the attached image "01 Android.png" in device manager.
- When I am in recovery mode, I see the attached image "02 LG E-970.png" in device manager.
- When my phone fully boots up, I see the attached image "03 LGE Android MTP Device.png" in device manager. At this point, and only at this point, abd will list my phone as a device.
The problem is, I need a connection to my computer from recovery / download mode in case of a boot loop.
Can anyone help?