CPU Upgrade for MSI H61M-P21-B3

Hi,

I need some help.
I would like to upgrade my CPU.
My Main Board is an MSI H61M-P21-B3. Currently my CPU is an Intel Pentium G860. I want it to change to an Intel Core i5 2500.
The socket type is the same and the Bios is supporting the new CPU. My problem is that i don't know if i change my CPU, the OS will boot (Win7) normally or I have to do a clean install ??

Thanks in advance for the help.