code is not getting uploaded in Arduino uno

"avrdude: stk500_getsync(): not in sync: resp=0x00" error on Arduino?..what does this mean?..how to rectify this error?..we tried changing com ports and al possible solutions..is there any problem wit the boot loader?.

kavyavenkat: "avrdude: stk500_getsync(): not in sync: resp=0x00" error on Arduino?..what does this mean?..how to rectify this error?..we tried changing com ports and al possible solutions..is there any problem wit the boot loader?.

Is your PC recognizing the USB connection when you plug the board into the PC?

With the arduino IDE opened look at the com port menu both before and after you plug in your board. The port that gets added after you plug in the board is the one you need to select before and upload will work. Also be sure you have selected the Uno board type before doing the upload.

Lefty