Hi,
I have been using Windows 7 in my Laptop (configuration below).
Will it be a wise decision to upgrade it to windows 10, depending whether it will affect or slow down my system.
Also, my windows 7 is a genuine copy but I no longer have the key so if during upgradation the system asks me for the key then I won't have any .
Laptop Configuration:
HD - 500 GB
RAM - 4 GB
Processor - i5, 5th Gen
Thanks