Solved If I install a new cpu will I need a new copy of windows? Tags: Windows CPUs Last response: July 17, 2014 9:58 AM in CPUs Share vincentily July 13, 2013 12:22:18 PM Or can i just use the one already in my hard drive? More about : install cpu copy windows Reply to vincentily nukemaster a c 145 à CPUs July 13, 2013 12:24:35 PM vincentily said:Or can i just use the one already in my hard drive? As long as you do not change the motherboard, Your windows install will be valid. That is for OEM copies. Retail ones allow you to swap anything you want(may still want to reinstall with board changes) as long as it is only on ONE system at any time. Reply to nukemaster m 0 l ss202sl a b à CPUs July 13, 2013 12:25:13 PM Not if you're only putting in a new CPU. If you replace the motherboard, then you may have an issue. Reply to ss202sl m 0 l Can't find your answer ? Ask ! Get the answer Best solution Kaluditz July 13, 2013 12:25:58 PM Make sure your motherboard supports the CPU. No, you don't need a new copy of your windows. Reply to Kaluditz Share DizzyEgg July 17, 2014 9:58:06 AM Thanks guys.. My new CPU is supporated but I had to update my bios. Reply to DizzyEgg m 0 l Ask the community Post an answer Read discussions in other CPUs categories AMD Intel Intel i5 Intel i7 Phenom Cooling Performance !