Can I use OEM disc to install W7 on different machine?

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When I bought my Maingear machine, It came with an OEM copy of Windows 7 Professional. I have an old Dell in the other room I'd like to run Windows on. Can I use the disc that came with my Maingear machine to install Windows on the Dell? If I need to re-install Windows on the Maingear at some point, is that license going to work on the re-install or are these licenses a one time/one machine type thing? Thanks in advance.
 

My Computer My Computer

At a glance

Windows 7 X64 ProfessionalIntel® Pentium D Dual Core 3.6GHZ4GB DDR2 PC2-5300GeForce GT 440 (Fermi) 2GB 128-bit DDR3 PCI E...
Computer Manufacturer/Model Number
Dell XPS 400
OS
Windows 7 X64 Professional
CPU
Intel® Pentium D Dual Core 3.6GHZ
Motherboard
DELL Dimension 9150 MotherBoard DXP051 XPS400 FJ030
Memory
4GB DDR2 PC2-5300
Graphics Card(s)
GeForce GT 440 (Fermi) 2GB 128-bit DDR3 PCI Express 2.0 x16
Sound Card
ASUS XONAR DG 5.1 Channels PCI Interface Xonar DG
Monitor(s) Displays
2 X 23" Apple Cinema Display
Screen Resolution
1920 X 1200p
Hard Drives
250GB Intel® 510 Series SSD SATA 6G (w/TRIM) [500MB/s Reads]
1.0TB Western Digital Caviar Black SATA 6G 7200rpm 64MB Cache
PSU
375 Watt Dell
Case
Dell XPS 400 BTX Case
Cooling
Dell XPS 400 Air Cooling
Keyboard
Logitech Illuminated Keyboard
Mouse
Logitech M705 Marathon
Internet Speed
+/- 9929 Kbps
Other Info
This machine was given to me when my dad bought a new computer. I keep throwing upgrades at it and it keeps on ticking. Think I've done everything to it that can be done outside a PSU upgrade so I can run an even BETTER GPU.
When I bought my Maingear machine, It came with an OEM copy of Windows 7 Professional. I have an old Dell in the other room I'd like to run Windows on. Can I use the disc that came with my Maingear machine to install Windows on the Dell?
No.

An OEM license for Windows is only for use on the very machine it came with. Reasonable hardware upgrades to the original machine do not cause any sort of legal problem.

If you actually did use that disc to install Win7 on a second machine, the activation process for that Win7 would get rejected by Microsoft's license/activation servers.


If I need to re-install Windows on the Maingear at some point, is that license going to work on the re-install or are these licenses a one time/one machine type thing?
No problem reinstalling Win7 down the road, again subject to reasonable hardware upgrades.

If you actually replaced the motherboard and CPU I would think the information sent to Microsoft at activation time might be considered a second machine and would be rejected. Or, you might get away with it but it's unpredictable.

Anyway, an OEM product key allows you to reinstall freely on that same machine. But it cannot be used to install on a second machine.
 

My Computer My Computer

At a glance

Windows 7 Pro x64 (1), Win7 Pro X64 (2)i5-3350p 3.1Ghz/6MB-cache (1); E8400 3.0Ghz/6...8GB PC3-12800 DDR3 (1); 4GB PC3-10600 DDR3 (2)ATI HD7750 (1), (see TV cards); ATI R7 250 (2)
Computer type
PC/Desktop
Computer Manufacturer/Model Number
Home-built, two systems (1) and (2)
OS
Windows 7 Pro x64 (1), Win7 Pro X64 (2)
CPU
i5-3350p 3.1Ghz/6MB-cache (1); E8400 3.0Ghz/6MB-cache (2)
Motherboard
ASUS P8Z77-V Pro (1); ASUS P5Q3 (2)
Memory
8GB PC3-12800 DDR3 (1); 4GB PC3-10600 DDR3 (2)
Graphics Card(s)
ATI HD7750 (1), (see TV cards); ATI R7 250 (2)
Sound Card
Realtek ALC892 HD Audio (1); Realtek ALC1200 HD Audio (2)
Monitor(s) Displays
Eizo HD2441W LCD, Eizo S2433W (1); Eizo 24" S2433W (2)
Screen Resolution
1920x1200, 1920x1200 (1); 1920x1200 (2)
Hard Drives
(1) 1TB SATA-II (7200RPM), 2x2TB SATA-III (7200RPM), 250GB SATA-III (10000RPM) for OS; 2x2TB external USB 3.0

(2) 320GB SATA-II (7200RPM), 750GB SATA-II (7200RPM), 150GB SATA-II (10000RPM) for OS; 2TB external USB 3.0
PSU
Nesteq ECS-6001 600W (1); Nesteq ECS-5001 500W (2)
Case
Acousti-Case 360 (1) and (2)
Cooling
Noctua NH-U12P SE2 for CPU, 2x120mm case fans (1) and (2)
Keyboard
IBM PS/2 (1) and (2)
Mouse
Logitech MX Revolution wireless (1); Microsoft wired (2)
Internet Speed
100mbps down / 10mbps up
Antivirus
Microsoft Security Essentials; Malwarebyte Anti-Malware Pro
Browser
Firefox
Other Info
Ceton InfiniTV 4-tuner cablecard-enabled TV card as well as Hauppauge HVR-2250 OTA/ATSC 2-tuner TV card in (1), running under Win7 WMC
Thanks for the info, dsperber.

So, if I bought a full copy of Windows 7 (not an upgrade) could I then install that on any machine I wanted or multiple machines? Or am I going to have to buy a licensed copy of Windows for every machine I want to install? Is there like a family-pack type license?

EDIThttp://www.sevenforums.com/windows-updates-activation/:

I guess I probably should've posted this in the Windows Updates & Activation forum?
 
Last edited:

My Computer My Computer

At a glance

Windows 7 X64 ProfessionalIntel® Pentium D Dual Core 3.6GHZ4GB DDR2 PC2-5300GeForce GT 440 (Fermi) 2GB 128-bit DDR3 PCI E...
Computer Manufacturer/Model Number
Dell XPS 400
OS
Windows 7 X64 Professional
CPU
Intel® Pentium D Dual Core 3.6GHZ
Motherboard
DELL Dimension 9150 MotherBoard DXP051 XPS400 FJ030
Memory
4GB DDR2 PC2-5300
Graphics Card(s)
GeForce GT 440 (Fermi) 2GB 128-bit DDR3 PCI Express 2.0 x16
Sound Card
ASUS XONAR DG 5.1 Channels PCI Interface Xonar DG
Monitor(s) Displays
2 X 23" Apple Cinema Display
Screen Resolution
1920 X 1200p
Hard Drives
250GB Intel® 510 Series SSD SATA 6G (w/TRIM) [500MB/s Reads]
1.0TB Western Digital Caviar Black SATA 6G 7200rpm 64MB Cache
PSU
375 Watt Dell
Case
Dell XPS 400 BTX Case
Cooling
Dell XPS 400 Air Cooling
Keyboard
Logitech Illuminated Keyboard
Mouse
Logitech M705 Marathon
Internet Speed
+/- 9929 Kbps
Other Info
This machine was given to me when my dad bought a new computer. I keep throwing upgrades at it and it keeps on ticking. Think I've done everything to it that can be done outside a PSU upgrade so I can run an even BETTER GPU.
Thanks for the info, dsperber.

So, if I bought a full copy of Windows 7 (not an upgrade) could I then install that on any machine I wanted or multiple machines? Or am I going to have to buy a licensed copy of Windows for every machine I want to install? Is there like a family-pack type license?
A "retail" (and "full" version, so that you don't have to satisfy the pre-installed other Windows prerequisites for the upgrade price) product key still is only valid for one machine at a time.

But if you want to scrap your old machine and get a new one, you can still use that retail product key on the second machine. You may get a message at "activation" time on the second machine, but it will provide a phone number to call Microsoft and tell them about the machine swap. They'll give you new numbers to enter which will validate that key on the new machine.

But if you want to buy something like a "family license" for multiple machines, well you're still going to have to pay for multiple retail license keys... each of which is usable for one machine at a time.

There are "volume licenses", but those really are for companies.
 

My Computer My Computer

At a glance

Windows 7 Pro x64 (1), Win7 Pro X64 (2)i5-3350p 3.1Ghz/6MB-cache (1); E8400 3.0Ghz/6...8GB PC3-12800 DDR3 (1); 4GB PC3-10600 DDR3 (2)ATI HD7750 (1), (see TV cards); ATI R7 250 (2)
Computer type
PC/Desktop
Computer Manufacturer/Model Number
Home-built, two systems (1) and (2)
OS
Windows 7 Pro x64 (1), Win7 Pro X64 (2)
CPU
i5-3350p 3.1Ghz/6MB-cache (1); E8400 3.0Ghz/6MB-cache (2)
Motherboard
ASUS P8Z77-V Pro (1); ASUS P5Q3 (2)
Memory
8GB PC3-12800 DDR3 (1); 4GB PC3-10600 DDR3 (2)
Graphics Card(s)
ATI HD7750 (1), (see TV cards); ATI R7 250 (2)
Sound Card
Realtek ALC892 HD Audio (1); Realtek ALC1200 HD Audio (2)
Monitor(s) Displays
Eizo HD2441W LCD, Eizo S2433W (1); Eizo 24" S2433W (2)
Screen Resolution
1920x1200, 1920x1200 (1); 1920x1200 (2)
Hard Drives
(1) 1TB SATA-II (7200RPM), 2x2TB SATA-III (7200RPM), 250GB SATA-III (10000RPM) for OS; 2x2TB external USB 3.0

(2) 320GB SATA-II (7200RPM), 750GB SATA-II (7200RPM), 150GB SATA-II (10000RPM) for OS; 2TB external USB 3.0
PSU
Nesteq ECS-6001 600W (1); Nesteq ECS-5001 500W (2)
Case
Acousti-Case 360 (1) and (2)
Cooling
Noctua NH-U12P SE2 for CPU, 2x120mm case fans (1) and (2)
Keyboard
IBM PS/2 (1) and (2)
Mouse
Logitech MX Revolution wireless (1); Microsoft wired (2)
Internet Speed
100mbps down / 10mbps up
Antivirus
Microsoft Security Essentials; Malwarebyte Anti-Malware Pro
Browser
Firefox
Other Info
Ceton InfiniTV 4-tuner cablecard-enabled TV card as well as Hauppauge HVR-2250 OTA/ATSC 2-tuner TV card in (1), running under Win7 WMC
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