Since formatting my pc, my writer will not write. It tells me that I need to use a writable device even though it is. I used it for about a year and a half or so with no problems until I formatted the pc. I use Vista. I don't know what the model of my writer is but a hardware identifier labelled my writer as Philips-BenQ. Someone told me maybe a firmware update. Where do I do this and how do I find out the model without shutting down the pc and removing the drive?