GerbenxB:
Yes, talking about an Arduino Uno and Windows 10 as OS
Is it 64-bit?
If so, your installation is probably identical to mine, so you'll probably only need to change the COM port.
(I'm using Windows 10 Pro 64-bit.)
If you have Win10 32-bit, you'll need to change the paths a little to suit. Before digging in too deep, just remove " (x86)" from the "Program Files" bit, and change the COM port part, of course.
If you have a problem, you might need to dig in and double-check the exact path to avrdude.exe and avrdude.conf.
Edit: Or there's CrossRoad's suggestion. 
ATMega328P chips are cheap. Mind you, copying the code and writing it to the new UNO is cheaper still. 