USB connection unstable

My USB connections are unstable. They randomly cut out, regardless of which port or what device is plugged in. My mouse and keyboard will stop working out of the blue. My USB microphone will stop working in the middle of a video chat or recording a narration. Sometimes I have to reboot to solve this. At other times I can just put the laptop to sleep and wake it back up and I have USB functionality again. The problem seems to be getting more frequent. Is this a software or hardware problem? What is the fix?
Laptop: HP G71 Notebook PC
Running Windows 7 Ultimate 64-bit Service Pack 1

Hi Ross,
Please let me know the results of reinstalling the drivers. If it didn't work, take a look at this document, which provides the steps to use Recovery Manager to restore your software and drivers.
If I have been helpful or if you’d like to say thanks you can click the white star under my name to give me Kudos. I really appreciate it!
Please let me know if this helps.
Good luck!
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