Windows 7 Forums
Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.


Windows 7: Clean Install of OEM OS

03 Dec 2010   #11
Bill2

Windows 7 x64 pro/ Windows 7 x86 Pro/ XP SP3 x86
 
 

Yes, the COA key comes in handy when you need to do a clean install, mostly for folks who never got a restore disk and failed to make recovery disks/ image their system. Otherwise, people just continue using their SLP installs, theres no reason not to.

When you validate an SLP system, the certificate is naturally one of the key indicators that is verified. There are many others- the mobo brand, computer maker, bios maker, bios date, product key, bios flag etc.


My System SpecsSystem Spec
.
03 Dec 2010   #12
mjf

Windows 7x64 Home Premium SP1
 
 

Quote   Quote: Originally Posted by Bill2 View Post
Yes, the COA key comes in handy when you need to do a clean install, mostly for folks who never got a restore disk and failed to make recovery disks/ image their system. Otherwise, people just continue using their SLP installs, theres no reason not to.

When you validate an SLP system, the certificate is naturally one of the key indicators that is verified. There are many others- the mobo brand, computer maker, bios maker, bios date, product key, bios flag etc.
Sorry if I'm going on a bit - just interesting (to me).
I would have expected MS to have off loaded the items in bold to the trusted manufacturers (HPs, Acers etc..) otherwise MS aren't saving themselves that much effort.
My System SpecsSystem Spec
03 Dec 2010   #13
Bill2

Windows 7 x64 pro/ Windows 7 x86 Pro/ XP SP3 x86
 
 

If I understand correctly, what you mean is that either OEM computers should not require validation at all or validation should be restricted to some select components. In an ideal world, that could be possible. Unfortunately, there exist ways to circumvent the system.

Also, this is part of the broader MS anti-piracy initiative which covers the different types of licenses. Piracy hurts MS, so anturally one would expect innovation to come from them rather than from the OEMs. Also, there really isnt that much effort going into it as you might think. WAT calls home only once in 90 days, and it hasnt evolved too much since it was introduced, but thats another topic......
My System SpecsSystem Spec
.

03 Dec 2010   #14
mjf

Windows 7x64 Home Premium SP1
 
 

I came across the summary below which was interesting.
I never recall activating my Acer OS and I think it falls into the category OEM:SLP described in the link. It states that the OEM:SLP activation is carried out offline without contacting MS. I can imagine how the security of these systems could be very tight and avoid MS costly overheads.
My PC appears to have a COA sticker so I think it may fall into the category OEM:COA with OEM:SLP key preinstalled.

They mention the OEM:NONSLP which does need to be activated by phone or online. I'm guessing that if I activate my OS with the COA key it then falls into the OEM:NONSLP category.

Introduction to windows 7 product key
My System SpecsSystem Spec
03 Dec 2010   #15
Bill2

Windows 7 x64 pro/ Windows 7 x86 Pro/ XP SP3 x86
 
 

Quote:
I never recall activating my Acer OS and I think it falls into the category OEM:SLP described in the link
Correct.

Quote:
It states that the OEM:SLP activation is carried out offline without contacting MS. I can imagine how the security of these systems could be very tight and avoid MS costly overheads.
The SLP activation scheme has loopholes which have been exploited but by no means is this MS's biggest headache. However, newer EFI bios's are already around and will become mainstream, these will be far more difficult to manipulate. I believe MS and the OEMs are cooperating on this.

Please remember that its not that MS cant catch this kind of rogues. Technically its quite possible but the logistics are somewhat prohibitive plus false positives ratchett up support calls.

Quote:
My PC appears to have a COA sticker so I think it may fall into the category OEM:COA with OEM:SLP key preinstalled.
No, your PC will fall into the COA category only if you use the COA key to activate windows.

Quote:
I'm guessing that if I activate my OS with the COA key it then falls into the OEM:NONSLP category.
When you do that, it'll fall in the COA category. OEM-NONSLP is a different license, it refers to system builder oem installs. Thats the kind you buy cheap from Newegg etc. or the types used by white box vendors, they work and behave like retail keys but are cheaper because MS support is not bundled.
My System SpecsSystem Spec
03 Dec 2010   #16
mjf

Windows 7x64 Home Premium SP1
 
 

Quote   Quote: Originally Posted by Bill2 View Post

Quote:
My PC appears to have a COA sticker so I think it may fall into the category OEM:COA with OEM:SLP key preinstalled.
No, your PC will fall into the COA category only if you use the COA key to activate windows.
Yes ok. My PC is effectively OEM:SLP at the moment but can be made OEM:COA with a clean install and activating windows.

Where I started from was the idea that with OEM:SLP you are less likely to get activation issues (on the same PC of course). Moving to OEM:COA could introduce the occasional need to reactive like OEM:NONSLP which both seem to involve MS in ongoing activation checks.
Therefore there could be an advantage in retaining the OEM:SLP activation state.
My System SpecsSystem Spec
03 Dec 2010   #17
Bill2

Windows 7 x64 pro/ Windows 7 x86 Pro/ XP SP3 x86
 
 

Well, if you stick to the original factory install or reinstall using the recovery disks/restore disk, then activation issues are unlikey to crop up.
My System SpecsSystem Spec
03 Dec 2010   #18
gregrocker

 

What activation issues? No activation issues here in 100+ factory OEM clean reinstalls with COA activation.

A factory install is compromised from the start with bloatware including useless factory utilities which needlessly duplicate superior features in Win7, and which are nearly impossible to remove without corrupting System Files. It is a corrupt install.

Therefore a clean reinstall makes any factory install "better than new."

Activation issues are negligible.

Clean reinstall tips: re-install windows 7
Attempt to clean up factory OEM tips: HP laptop has used up all four primary partitions
My System SpecsSystem Spec
03 Dec 2010   #19
Bill2

Windows 7 x64 pro/ Windows 7 x86 Pro/ XP SP3 x86
 
 

Dont worry, I'm not advocating factory installs, the statement about activation was not exclusive of other types of licenses.
My System SpecsSystem Spec
03 Dec 2010   #20
mjf

Windows 7x64 Home Premium SP1
 
 

As I now see it the best approach is if you have an OEM:SLP (most bought systems)
(1) Clean up the trial software. If some residual components remain, clean them up manually (or with things like Revo Uninstaller) or forget about them unless they cause problems.
(2) Go to OEM:COA if (1) is proving to be a problem or you want certain changes to your partition structure. With the COA sticker you can always go from OEM:SLP to OEM:COA at a later stage.

With (1) it appears to be less likely you will get reactivation issues later on. eg. with older images.
Retail, OEM:COA, OEM:NONSLP may all require MS reactivation at some stage. This should be straightforward and able to be done with a phone call or online.
-------------------------------------------------------------------------------

This is the conclusion I have come to so far in this discussion (including the little bit of information I refer to).
My current OEM:SLP has 4 primary partitions:
Factory Recovery; System Reserved; Win 7 OS; Data
I think I could (if I wanted!) change the Data partition to Extended & have multiple logicals.

I know through the forum advice how to go OEM:COA / clean install if and when I want to.
My System SpecsSystem Spec
Reply

 Clean Install of OEM OS




Thread Tools




Similar help and support threads
Thread Forum
How can I do a clean erase of my SSD to clean install Windows 7?
I think I have a virus or malware and have been unable to get rid of it after many tries, and I am having multiple problems with this home built computer running Windows 7Pro 64bit. I installed a retail version of Windows 7Pro 64bit and I have my original installation disk. I want to do a clean...
Installation & Setup
Clean install vs System image file install?
Could someone tell me if a re-install from a system image file on my notebook is as good as a clean install from say a retail disk. I can not format all my drive and start a fresh. Can my System image file become glitchy or infected with a virus.???:huh:
Installation & Setup
Clean Install of Win7 - Wipe Hard Drive Clean
Hi Folks, I just did a clean install of Win7 and must have done something wrong. I found a file called Windows.old.:confused: I would like to wipe my hard drive completely clean and then install a fresh copy of Windows 7 Home Premium. How do I accomplish this task? It's a good time to...
Installation & Setup
No Drives Found in W7 install, trying clean install on HP DV4 1228CA
Hi all, I'd appreciate any help I can get on this, my laptop hdd died a few days ago and I've been pulling my hair out trying to install w7 on a brand new HDD i bought. Specs: HP Pavilion DV4 1228CA Systemboard ID 30FB AMD Turion X2 Dual Core Mobile RM 72 4Gigs of RAM DDR2 BIos F55...
Installation & Setup
Boot config not working, tried clean install, can't install windows 7
My spouses pc all of a sudden wouldn't boot, not into safe mode or anything (vista), and so we were going to upgrade anyways to windows 7, so i bought the upgrade windows 7 and attempted to do a clean install and reformatted the c: drive which has 250gb, and each time i start the install it bogs...
Installation & Setup
Clean install to replace existing windows 7 install
I'm looking to buy a new laptop, seen a few models I like and they all come with windows 7 pre-installed. Problem is they all also come with a dozen or so pre-installed pieces of freeware/shareware/trial software that I have no use for and don't want and I would like to do a clean install of...
Installation & Setup


Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 10:27.
Twitter Facebook Google+ Seven Forums iOS App Seven Forums Android App