Notebook suddenly stopped recognizing my sgs

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Hi there,

I flashed my sgs several times, but suddenly my sgs isn't recognized by my notebook anymore. I tried reinstalling my usb drivers, sgs drivers & Samsung Kies unfortunately with no result

When I connect my sgs I can see the battery charging, but I keep getting the message that my 'device' is unknown. Does anyone experience the same problem? And how can it be solved?

I tried another desktop but i'm facing the same problem there as well..

Furthermore I noticed another unusual thing; When I turn off my sgs and connect it to the notebook it turns itself on, while it only used to charge the battery before

I'm using the following software:
sgs: JM2 + root + mimocan lagfix
nb: windows 7 64-bit

Thanks in advance!

Jersr

*Ps: I'm sorry if my English is bad

that is a very strange problem, if it was only happening to one windows machine, then i'll say the USB port on the machine might be bad, but if 2 windows machine says the same problem, then it's something else

i hope it's not your SGS USB por that is damaged.

because that is the only time when windows will report "USB device unknown"

try turning off the windows machines, then turning it back on

sometimes windows 7 gets stuck in a stupid mode, where it wont accept new USB devices.

i have to reboot my windows 7 x64 machine every 2 weeks, because every now and then it will not recognize USB keys, HTC phone, or SGS phone, or whatever i happen to plug in.

then after reboot, it works right away.... windows is stupid

I tried a reboot several times, but it didn't help.. If the sgs usb port is the problem then why does it still charge the battery when connected?

Sent from my GT-I9000 using XDA App

Because charging doesnt requiere working drivers...
You should check if the phone is recognized in downloading mode if yes reflash with checked re partition than check again
Sent from my GT-I9000 using Tapatalk

Connecting the sgs while being in download mode is giving me the same message; unknown device

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stupid question but i have to ask the obvious:

settings->about phone->usb settings

is set to the right option (mass storage, ...)?

I've already tried all the options in there

Sent from my GT-I9000 using XDA App

hm, strange problem indeed!

Originally Posted by AllGamer

then after reboot, it works right away.... windows is stupid

if you have access to a linux box...

lsusb

gives me

Bus 001 Device 019: ID 04e8:681c Samsung Electronics Co., Ltd

without any special driver installed ... desperate but if you tried on 2 different machines and it's not working ...

I entered the command in ubuntu terminal and it looks like my sgs is a unknown device there as well

Sent from my GT-I9000 using XDA App

I had similar problems getting my computer to recognise my Galaxy S also. I was also unable to uninstall the Samsung Mobile Device Drivers for some reason so I deleted the drivers manually from <Windows>\system32\Drivers. Here are the steps I took:

1) Delete all Samsung drivers from <Windows>\system32\Drivers.
2) Control Panel -> Programs and Features
3) Uninstall Kies
4) Uninstall the Samsung Mobile Device Drivers.
5) Reboot PC (leave your phone unplugged).
7) Reinstall Kies (it should take longer than usual to install as the drivers will be reinstalled).
8) Close Kies and the tray icon.
9 Open Odin.
10) Boot the phone into download mode (Hold Volume Down + Home + Power).
11) Plug in your phone into your PC.
12) If the PC doesn't immediately recognise the phone (it didn't for me), go to Control Panel -> System -> Device Manager, then from the menu select Action -> Scan for hardware changes.

This should cause your PC to recognise the Galaxy S, reinstall the Samsung Component Device and Samsung Mobile Modem drivers and Odin should recognise the device. At this point you can setup Odin with the PIT, Code, Phone and CRC files and flash as per usual.