Hi Mona,
Are you getting anything at all if you plug it in to iTunes, does the computer recognise it at all? It should not matter that you do not have a MacBook as long as you have the latest version of iTunes installed. If you want to, you can try uninstalling iTunes from your laptop and reinstalling it from either the Windows store or the Apple website.
If this does not work, Apple will not charge you to reset the phone to factory settings but you will need to book an appointment. If you do not go to an Apple store, for example and Apple Service provider or a 3rd party repair shop, they may charge you.
Apple will do the reset on the phone, even if you did not purchase it there so don’t worry!
If your iTunes is all up to date, try following the steps [https://www.theiphonewiki.com/wiki/DFU_Mode|here] to put it into DFU mode then reconnect it and try resetting it again.
Hope this helps!