I upgraded my cpu/motherboard do i need a reinstall(dont have an install disk)

[maskedmonkyman]

So I recently bought a new processor and mother board and a lot of places say that i need a fresh windows install but the problem is my computer came with windows 7 pre-installed so i don't have a disk. So is there any way i can have windows check for new hardware drivers on next boot or get an ISO and use my old product key(witch is on the side of my machine)? or do i just have to buy a new copy of 7?

tech specs
computer: ASUS Essentio CG1330-05
original processor: AMD Phenom II X6 1035T 2.6GHz
don't know what the original motherboards model number is but its by ASUS

new processor AMD FX 8350 4.0GHz
new motherboard: ASUS M5A97 LE R2.0 AM3+

 

[IDontUnderstand]

If I'm correct, pre-installed OS are tied to the motherboard. However people do suggest calling Microsoft and reason them with that.

Source: http://www.tomshardware.com/forum/36804-63-changing-motherboard-win7-version

 

[unksol]

Your computer has an OEM license. it over s invalid if you change to board. you have to buy a new license