I was having a working USB flash drive which is now not detecting on a single computer that I have. Actually, the same computer is not able to detect any kind of usb dlash drivers but the ports work normally for printing and all. I havent installed any new softwares and the flash drives are all working on other computers. I have also turned off antivirus and antispyware software on my machine but still the usb drivers cannot be detected? Any help would be appreciated.