scan your computer with a virus checker and anti-spyware etc - try more than one product (e.g. there's also NOD32 ESET), clean any infections and reboot


if that doesn't work, try changing your drive letter assignments - this works for lots of people


if that doesn't work, try uninstalling your floppy drive -

then try making your software stop looking for drives: e.g. uninstalling and reinstalling an upgraded (or latest possible) version of QuickTime; similarly with your Norton and HP software if you have any, and clearing your most recently used documents or files lists


last resort: make the error message go away. This doesn't fix the problem, it addresses the symptom not the cause, so it really is a last resort if you can't fix it any other way, but if you're being driven mad, it's better than nothing.