I am getting "E:\ is not Accessible. Incorrect Function" message when i try to burn a CD or DVD on an external DVD\RW that works on other PC's. Last week I tried a drag and drop in windows explorer that failed. since then my internal and external drives won't burn. they don't even show up in my Roxio as burn devices. I did not have any problems prior to the drag and drop failure. I have since uninstalled all of the burning softwares that were on my pc. I know it is not a hardware problem as I am able to burn to the external on other pc's. any ideas??? please help.