Arduino Uno R3 doesn't work, XP, error

Hi, I have a problem with my arduino Uno R3, I use windows XP, and when I try uploading the blinking LED sketch it says : avrdude: stk500_getsync(): not in sync: resp=0x00 I have the right COM port selected (COM 2), the right Ardiuno selected and I have the drivers installed still there is an exclamation mark at the Arduino under COM&LPT and I think that might be the problem. The Arduino works perfectly fine onto another computer (Vista) and I have no errors on it but it's a bit uncomfortable working on it as it is desktop computer (less mobility) and it's quite old and slow + at the moment I'm writing this the computer won't start. :0 Anyways I'd appreciate any help thank you.

ArduinR3Problem.bmp (966 KB)

Holy geebus you have a lot of com ports.

The yellow exclamation point it typically a sign of an error with the driver or the device. if you double click on the arduino what does the window that pops up say?

Maybe try to uninstall the drivers the reinstall them.

Check if this modded version fixes the issue: http://arduino.cc/forum/index.php/topic,118440.0.html If problem is fixed you will know isn't something related to the firmware, etc

I'd recommend ditching whatever bluetooth driver you have, and finding something better. My guess is that driver is interfering with the IDE's use of the COM port.

Comm 2 is a 'regular' serial port (3E8?)... he needs to open up that yellow flagged entry and fix it, XP hasn't installed the correct driver. 're install the driver, point it to the drivers in the main Arduino folder... Worked for me... win 7, 86 & 64....

Doc

I'll try anything you say but I think it's mostly a problem with the computer maybe I'll reinstall windows.