I think about, if notebook lenovo R52 with processors intel pentium 1.73 ghz, may I do upgrade for i3, i5 or i7 of 3.2ghz, or pentium 3.2ghz in the motherboard. Can i do upgrade processor?
You need to ask lenovo, as it is their bios that will determine this. Ask lenovo what processors are supported by their bios, then select from those processors. And, this is only possible if the current processor is not soldered to the motherboard.
Personally, and in my opinion, it makes little sense to do this. Get a new or new laptop/notbook, and you will be much happier.