I have an Acer 5720 Vista 32 bit : because of BLue screen death, had to reinstall operating system , now the unit can not find the drivers for bluetooth . I attempted to use a dongle, which allows the laptop to find my devise ( Headphone ) , but the headphones Speaker/earpiece do not work , when trying to call using Voip /Skye etc the error message is bluetooth devise is ? malfunctioning . It seems that VISTA has many /many bugs, and this Bluetooth issue is one : I have removed the driver in devise manager , and reinstalled Acer supplied drivers , but can not find them / I have installed 3rd party Bluesoiel : and have same problems ? Anyone know how to fix this ?