Samsung galaxy y GT-S6102 No Notifications of USB Connected but charging

First try this:

http://blog.vacs.fr/?post/2010/12/24/How-to-repair-the-USB-not-detected-problem-on-Android-Samsung-phones

 If above link is not working out then perform following actions:

1. Restart your mobile by holding three buttons... Volume up+home button+power button.. Now when you see Samsung logo release the buttons... After few seconds you will see 4 options written in red text.. Which is stock recovery (Android system recovery)... select first option there.. ("reboot system now").. It will say "Rebooting..." in green colour..

2. Now when screen gets black.. immediately press and hold volume down+home button+power button..
you will see a page saying "Warning"
A custom OS can cause critical problems in your phone and installed applications.. and it will say some more in next paragraph..
Dont worry about it.. Now press "Volume up" to continue to odin mode..

3.you will see ODIN MODE written on top of screen in red..
Now make sure you are connected to your pc through usb cable and pc is logged in and open odin file..

4. In Odin you will see a yellow color in one box below "ID:COM" section.. If you are not seeing yellow restart your mobile and do same process from step 2. also restart your pc if its still not showing yellow. If it is showing then good.

5. Now select "PDA" button under "Files [Download]" section.. select "PDA_S6102_(your firmware version no.).tar.md5" file
Now select "PHONE" button below "PDA" button in "Files [Download]" section.. select "MODEM_S6102_(your firmware version no.).tar.md5" file
Now select "CSC" button below "PHONE" button in "Files [Download]" section.. select "CSC_S6102_(your firmware version no.).tar.md5" file

6. Now remember!! Only "Auto Reboot" "F. Reset Time" options should be selected..
PDA
PHONE
MODEM also should be selected..

7. Now you are ready to flash through odin.. Just press "Start" button.. and wait around 10 minutes until odin finishes and the "yellow" box should show green... It will usually finish within 52 seconds to be precise..

8. Now your phone will reboot. If it starts showing Samsung logo again after few minutes.. Restart your mobile by holding three buttons... Volume up+home button+power button.. Now when you see Samsung logo release the buttons... After few seconds you will see 4 options written in red text.. Which is stock recovery (Android system recovery)...and select "wipe data/factory" and select first option there.. ("reboot system now").. It will say "Rebooting..." in green colour..

9. Now enjoy your brand new stock rom.. Hope this helps you!!