I hope it's cool to ask a a question that is not audio related. I just think a lot of guys here will know the answer!\nI updated my desktop (finally) to Windows 10 (don't like it!) from Windows 7 and now my Garmin GPS will not update. I need it updated as I am a medical delivery driver. So, I bought a used Toshiba laptop on ebay today really cheap for the purpose of just updating my GPS. I tried googling, tried Garmin support all to no avail. It is supposed to update via wifi too, but that has never worked I don't think either. So I am S.O.L. and thought I'll just get a device with Windows 7. The laptop that I bought on ebay does not come with a power supply. But I have a super old Toshiba laptop I was hoping the p\/s would be compatible. They both have the same pin polarity and 1.9 v output, but the output amperage is different. Mine is 3.95A, the one it requires says 1.58A. Will mine work for the new-used laptop?