Can you upgrade a computer’s processor? From a Pentium Dual core t4500 to a I5/I3/I7?

We have an Acer Aspire 5734Z and I need to update the Processor from the “Pentium(R) Dual-Core CPU T4500 A COUPLE OF.30GHz” To an THREE.0GHz I3 or possibly even the I7 if i can manage it If i can, Could I repeat this myself and also would I want to be a practitioner.

No.your CPU uses Socket 478 and also i3-i7 make use of different sockets for example LGA :1155 as well as LGA :1156.