When I start up my laptop, I keep getting the alert "cannot delete file - cannot read from source file or disk". It appears 3 times and it doesn't tell me which file it is that cannot be deleted. I've had a look at previous questions and answers but they all seem to refer to known files. I have 2 questions. 1. How do I find out which file(s) is/are causing the problem and 2. How do I get rid of them? I'm running XP Pro SP2 on an Acer 8204 WLMi.