is it possible?

[officialezay]

Can I upgrade my Hewlett Packard Pentium(R) dual core CPU T4300 @ 2.1GHz to i3 or i5

 

[Karadjgne]

No. Vast majority of notebooks/laptops use soldered cpus, you physically can't remove them to change them.

 

[rgd1101]

MERGED QUESTION
Question from officialezay : "can I upgrade my Hewlett Packard Pentium (R) dual core CPU T4300 @ 2.10GHz"

Plz answer asap

 

[USAFRet]

Can I upgrade my Hewlett Packard Pentium(R) dual core CPU T4300 @ 2.1GHz to i3 or i5

No.
While that does probably have a PGA478 socket (Pin Grid Array)....you can't put an i3 or i5 in it.
https://ark.intel.com/products/37253/Intel-Pentium-Processor-T4300-1M-Cache-2_10-GHz-800-MHz-FSB