HELP! stk500_getsync():not in sync:resp=0x30 for 1st time uploading

Arduino Starter Kit with Arduin Uno
PC system= Windows XP and Vista

Tool- board --> Arduin Uno
Tool- serial comm. --> comm 3 (auto configured by the software)

Sketch- "Blink" in the examples
The green power led was solid on, and the Pin13 yellow led was blinking after a reset.

It has been resolved after installing the driver.

Thanks.