So I have 3 PC's that are Dells that are making a random beeping noise.  It's not sequential like RAM issues, or HDD.  It's very random.  I first believe that it was a scanner they were using that was hooked up to both PCs.  Then the the third one starting beeping that does not use a scanner.  I have reimaged one PC and replaced one with a loaner.  They were good for a few days then started beeping again.  Only common denominator I can see is that all three use the parallels software.  Any suggestions would be greatly appreciated.