I was following this tutorial form wiki.cyanogenmod.org and it went fine till step 12
#11. Unplug the USB cable from your device You can now manually reboot the phone into ClockworkMod Recovery mode by holding .
#12. The Galaxy Tab 2 7.0 (GSM) now has ClockworkMod Recovery installed. Continue to the next section.
And instead of starting in recovery mode, I started in normal mode mistakenly. So I did the whole again. Until now the "Custom binary download" was showing "2 counts" but again mistakenly started in normal mode. Then I did the whole once again, and held the power and up volume button to start in recovery mode. But the device was stuck at start screen (which shows galaxy tab 2 logo). I doesn't even start in normal mode. I did the whole again and again. Now the "Custom binary download" is showing "5 counts".
The device is not starting again neither in recovery mode nor in normal. Please help.