I have a laptop with 1.6Ghz processor and i want to replace it's motherboard so can I replace this with a motherboard having 1

[vk304836]

I want to change motherboard of laptop having 1.6Hz intel pentium processor to 1.4Ghz intel pentium processor? Will this work??

 

[USAFRet]

I want to change motherboard of laptop having 1.6Hz intel pentium processor to 1.4Ghz intel pentium processor? Will this work??

Almost certainly not.
You can't just swap motherboards between laptops.

Of course, you've not given us any details about make, or model. So we have zero idea.