Do i have to reinstall windows after changing the mainboard and the processor

[TranTD]

I'm using H81M-S2PV motherboard from Gigabyte and Pentium G3450 and i want to upgrade to B85-E45 and Core i5-4460.
So, if i do that, do i have to reinstall windows?
Also, i'm using windows 10 64-bit.

 

[clutchc]

Probably not since you are simply moving between similar platforms. You probably won't have any trouble booting to the desktop using the old installation of Win10. But you will want to run something like CCleaner and do the Clean and Registry portions both to help clean up the left over crap from the old platform. Followed by installing the necessary drivers for the new board, of course. (although Win10 will install drivers from its database)

 

[Zerk2012]

I'm using H81M-S2PV motherboard from Gigabyte and Pentium G3450 and i want to upgrade to B85-E45 and Core i5-4460.
So, if i do that, do i have to reinstall windows?
Also, i'm using windows 10 64-bit.

Their really no reason to change the motherboard just update the BIOS on the board you have and put the new processor in.
If you have revision 3.0 for the board (says the revision number on the lower left side of the board) you can just reset CMOS and install the new processor and nothing else to do.

 

[USAFRet]

Will you have to reinstall?
Probably not.

Key word...probably.

Prepare for if you do.
Read and do this before any hardware change:
https://support.microsoft.com/en-us/help/20530/windows-10-reactivating-after-hardware-change
http://www.tomshardware.com/forum/id-3164428/windows-build-1607-activation.html

 

[TranTD]

my bios version is F2 can i run the core i5 4460 or do i have to update it ?

 

[clutchc]

my bios version is F2 can i run the core i5 4460 or do i have to update it ?

Which revision is your H81M-S2PV board; 3.0 or 1.0?
If 1.0, yes. If 3.0, no. See the board's web page.
Or are you referring to the board you want to replace it with?