I have a US bought Dell Inspiron 6000. My power cord just went out on me and all my business specs are on this laptop. I have a presentation next week and not enough batt power to complete the presentation. Will a European Dell Inspiron power cord work on my laptop? My US power cord is 65w and the European one is 90w. The shop owner here is trying to tell me it will work without any problems but I want to make sure before I damage my machine. Thank you!