USB ports. My laptop does not detect my USB Flash Drive

i updated my nc compaq 6320 laptop to win7 professional,after which i noticed it does not recognised any usb device please i will appreciate any useful help. my mail add is "akinsimabi@yahoo.com" tanx
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More about ports laptop detect flash drive
  1. do you have a USB controller among the devices in device manager? (Start > Control Panel > System > Hardware > Device Manager)
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