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Windows 7: Will I have to Re-install with a CPU Upgrade?

07 Sep 2010   #1
BillS22

Windows 7 64bit
 
 
Will I have to Re-install with a CPU Upgrade?

If I upgrade my CPU from a E6600 to a Q9550 will I have to re-install Win 7?

And if it's recommended that I re-install, can I do it over my existing install so I won't have format my HD?


.....I don't want to re-install all my apps........


My System SpecsSystem Spec
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07 Sep 2010   #2
gregrocker

 

It is highly likely Win7 wil start up since only your processor will be changed, unless I am missing something. Win7 has most all modern drivers - it is normally a combination of changes that flummox the startup.

Win7 will start itself on entirely new hardware about 50% of the time in my experience, swapping out the necessary drivers while requesting restarts as needed. There is no performance effect I have seen.

If it fails to start, you can try booting into Safe Mode to install the new processor driver which you unzip to stick or CD.

If forced to clean install from boot, you can overwrite the old install if you want as it will autoformat. If you have Upgrade version, it will see the old OS to allow use of key.
My System SpecsSystem Spec
07 Sep 2010   #3
Total

Windows 10 Pro - 64 bit
 
 

Quote   Quote: Originally Posted by BillS22 View Post
If I upgrade my CPU from a E6600 to a Q9550 will I have to re-install Win 7?

And if it's recommended that I re-install, can I do it over my existing install so I won't have format my HD?


.....I don't want to re-install all my apps........
I have to this several times now - when you change the chip - boot off the windows 7 cd - press any key -- then select set up windows - new - it will search for existing windows installs , select you existing windows / then select repair - let it do its stuff -
My System SpecsSystem Spec
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07 Sep 2010   #4
BillS22

Windows 7 64bit
 
 

thanks
My System SpecsSystem Spec
07 Sep 2010   #5
gregrocker

 

Quote   Quote: Originally Posted by BillS22 View Post
I have to this several times now - when you change the chip - boot off the windows 7 cd - press any key -- then select set up windows - new - it will search for existing windows installs , select you existing windows / then select repair - let it do its stuff -
I believe you are referring to an XP Repair Install which goes more or less according to those steps and is used to boot XP on new hardware.

Win7's own Repair Install is done from the desktop so cannot be used for this, however some have reported that Startup Repair run from the Win7 DVD Repair console or Repair CD will help with this.
My System SpecsSystem Spec
07 Sep 2010   #6
Night Hawk

W7 Ultimate x64/W10 Pro x64 dual boot main build-remote pc W10 Pro x64 Insider Preview/W7 Pro x64
 
 

What was seen here when swapping out memory on the new build required a clean install due to going from OCZ to Mushkin memory. Later after a spare supply onhand went and trashed he first board the replacement went right in without any need for reactivation. Same make and model.

For the cpu swap both being Intel you may or may not have any problem with the swap out as far as the activated status. You will find that out once the new cpu is in if that was considered a major hardware change by Windows which sounds less likely.

As far as Windows starting up that wouldn't have any effect on booting Windows simply going with a faster cpu while Windows will still detect the change on it's own. You wouldn't expect any changes to the boot sector/mbr informaiton to start with.
My System SpecsSystem Spec
08 Sep 2010   #7
jimbo45

Linux CENTOS 7 / various Windows OS'es and servers
 
 

Hi there

After replacing the processor (or even the motherboard) just boot up - once connected to the Internet it will go through a whole slew of "Found New hardware" and probably ask for a re-boot when its been done.

I've changed processors and motherboards lots of times without having to do a re-install or even a repair.

You might also have to load various drivers later from the disk that comes with a new motherboard if you are changing a motherboard.

On the VERY RARE occasions I've had a BSOD on boot system repair will generally fix it.

Note in some cases even with a Motherboard change I haven't been asked to re-activate Windows - but on changing to me what seems a much more trivial piece of hardware such as an extra DVD drive I've had the "Hardware has changed - please reactivate Windows".

(Note my comments have assumed that you are running ANY version of W7).

For XP different criteria apply - assuming you could even find the latest drivers for the modern processors.

Cheers
jimbo
My System SpecsSystem Spec
08 Sep 2010   #8
nokken

Windows 7
 
 

If I'm not mistaken - once you activate a Windows 7 license, you are allotted a certain amount of "points". These points are deducted from each time a piece of hardware is changed from the initial configuration during activation. Once your number of points drops below a certain unknown threshold, Windows will ask you to re-activate.

Edit: It is assumed that small items like disc drives and sound cards are worth less points than major items like the motherboard.

I know in my case, I removed a DVDRW drive and swapped out an E6750 for an E8400 and was not asked to re-activate. I didn't even need to run a repair install either.
My System SpecsSystem Spec
08 Sep 2010   #9
Solarstarshines

Windows 10 Home Premium 64bit sp1
 
 

The only thing you need to do before changing the cpu make sure the Mobo Bios is up to date other then this windows 7 will detect and just upgrade it

I doubt windows will make you do anything other then Modify you're WEI
because you just upgraded the Cpu

All you are doing is uping the performance chip on the board as long as the Bios are up to date and you know how to put it in thermal paste etc then you SHOULD BE GOOD TO GO

I honestly never had to perform any hardware changes when installing a new cpu if it was built for the board it would read it like putting a new hdd in without making it master or slave cs what ever i guess it depends on how adjustable your board is to new modifacations
My System SpecsSystem Spec
08 Sep 2010   #10
strollin

W10 Pro desktop, W10 laptop, W10 laptop, W10 Pro tablet (all 64-bit)
 
 

I upgraded a machine I had from a single core AMD processor to a dual-core AMD processor. After booting, Win 7 update downloaded some new drivers, no need to re-install or re-activate.
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 Will I have to Re-install with a CPU Upgrade?




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