Hi, i tried to connect my usb pendrive to the system(Windows 2000 prof) .but it is not detected.then i went to the device manger and choose scan for hardware changes.then it appears but not able to access any file.Then i restarted the system. The Chkdsk run's for the USB PenDrive After logging in checked it is working fine. Two hour's later i again connected it . it is not detecting in the computer. i insert the USB pendrive in different USB port's also. then also no response. If i go to device manager and choose scan for hardware changes .then also no response.Please help me to sort out the problem.