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Do i need to reinstall my OS after replacing the CPU

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August 30, 2012 9:10:22 AM

Do i need to reinstall my OS after replacing the CPU and motherboard? If so then why?
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a b V Motherboard
August 30, 2012 9:42:20 AM

Naa no need. Just make sure to clean out the old thermal paste before applying new one but you probably know this already
August 30, 2012 9:54:17 AM

The OS is licensed to the BIOS not the CPU. So long as you don't change the Mobo you can use the same license.
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August 30, 2012 1:34:37 PM

Regardless of the OS license and thermal paste, the problem here is if the OS will be able to install all the devices on the mobo needed to boot the OS.
I personally don't think so... I would definately like to see it happen though!
If you back up all your stuff and don't really have a problem loosing the OS, give it a shot...
Let us know how it goes!
August 30, 2012 3:08:32 PM

ngrego said:
Regardless of the OS license and thermal paste, the problem here is if the OS will be able to install all the devices on the mobo needed to boot the OS.
I personally don't think so... I would definately like to see it happen though!
If you back up all your stuff and don't really have a problem loosing the OS, give it a shot...
Let us know how it goes!


Nah i probably won't be doing that any time soon. I just bought this intel core i5 3570k and i'm currently saving for a motherboard so its gonna take a year maybe lol
August 30, 2012 3:12:13 PM

akxpckwb said:
Naa no need. Just make sure to clean out the old thermal paste before applying new one but you probably know this already


That's the basic knowledge for anyone who is building a PC. But i'm replacing both CPU and motherboard. I bought an intel core i5 3570k and i'm saving for a motherboard but i currently use an AMD platform until i buy the motherboard. Also the pre-applied compound on the stock cooler is untouched so i won't need to replace it but if i do i still have spare paste from my CM hyper TX3 that hasn't been used yet but i bought it in case the hyper tx3 didn't have pre-applied paste
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August 30, 2012 3:18:47 PM

Oh yeah I didn't notice you were also going to substitute the motherboard... that's what happens when you read stuff first thing in the morning right after waking up.

Well in that case it is recommended that you format the HDD and install everything again to avoid possible issues. You could also try without formatting the HDD. If it works good if it doesn't a format will solve it.

Also if your system is OEM you might not be able to use the OS CD you have
August 30, 2012 3:22:59 PM

akxpckwb said:
Oh yeah I didn't notice you were also going to substitute the motherboard... that's what happens when you read stuff first thing in the morning right after waking up.

Well in that case it is recommended that you format the HDD and install everything again to avoid possible issues. You could also try without formatting the HDD. If it works good if it doesn't a format will solve it.

Also if your system is OEM you might not be able to use the OS CD you have


Don't worry i use a downloaded version of windows 7 and used windows loader to make it genuine... xD
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a c 137 V Motherboard
August 30, 2012 4:39:17 PM

Lazar_99 said:
Don't worry i use a downloaded version of windows 7 and used windows loader to make it genuine... xD


You've been around here long enough to know that you shouldn't admit that... I don't fault you for telling the truth, but there are times when the truth is best left unsaid.
August 30, 2012 6:07:04 PM

DJDeCiBeL said:
You've been around here long enough to know that you shouldn't admit that... I don't fault you for telling the truth, but there are times when the truth is best left unsaid.


I asked this because i heard many people had to reinstall their OS after replacing their CPU

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a c 137 V Motherboard
August 30, 2012 6:20:26 PM
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Lazar_99 said:
I asked this because i heard many people had to reinstall their OS after replacing their CPU


Well, like you were told, not after just replacing the CPU in the same mobo.

Reinstalling is definitely recommended if you replace the board too, though (especially from AMD to Intel, since there will be many differences in the platforms).
August 30, 2012 6:48:33 PM

Best answer selected by lazar_99.
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