lilypad usb not working

my lilypad USB is stopped working after installing Java Netbeans in system, and in Arduino IDE it is showing COM 10 without connecting USB to any of the port .

help me out of this please…

My GUESS … try uninstalling the Arduino IDE and then re-installing it w/Java Netbeans already installed.

Thanks for reply

After many trials I found that COM port is missing and asking for drivers , tried many times with different versions of arduino IDE but error message which is certificate and incompatibility issues and even i bought new lilypad. What to do