I used to be able to transfer files between my Sensation and my Win7 Home premium PC just fine with no issues. Suddenly it doesn't work and i have no idea why or what went wrong. I changed nothing. The PC shows yellow ! mark in devices and printers on my Sensation icon. When I try to search for my computer from the HTC's bluetooth screen, nothing happens. Windows says I have no peripheral device driver installed but it can't find a proper driver. HTC company web sitehas no information about this, no driver file. I'm at a loss how to fix this and I REALLY need it working. I transfer files A LOT for work. Help. Not a techy so please offer advice in "stupid" please.