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This page describes information about Original Equipment Manufacturers (OEMs) and how to find out an OEM’s contact information.

Microsoft OEM products are Microsoft products that were supplied with a computer or in the case of software, installed on a computer by a computer manufacturer. This can include your operating system (such as Windows 10). 

How did you obtain your product? Was your Microsoft product preinstalled (in the case of software), distributed with your computer, or obtained as an upgrade directly from your computer manufacturer? If the answer is yes, it is likely that you have an OEM product. For customers with an OEM product, the primary source for support is the personal computer manufacturer who provided the Microsoft product.

Because your computer manufacturer has configured your computer hardware and software they would be the primary resource to contact for any technical support for preinstalled Microsoft product that might be needed. You may be entitled to free warranty support from your computer manufacturer.

What if I don't want to contact my computer manufacturer or my warranty has expired?

Depending on the product you need support with, there may be Microsoft support options available to you. They include:

  • Self-help support. For free self-help support resources, please select your product at the Microsoft Support home page.

  • Free support. Users of preinstalled Microsoft (OEM) software can benefit from Microsoft no-charge support when the issue is directly related to one (or more) of the following subjects:

    • Problems on your PC after installing an update for Microsoft Windows

    • Problems installing a Windows Service Pack or upgrading to a more recent version of Windows

If your problem is related to one (or more) of the subjects above, please contact Microsoft support.

  • Paid support. You may still be able to purchase support from Microsoft. To see what support options are available for your product, please select your product from the Contact Us page on the Microsoft Support website.

A vendor is a company that sells or provides hardware, software or a service. For hardware, this may include a video card, a motherboard or external hard drive. For software, this may include compression software, photo editing software or modeling software. For services, this may include email or a hosted application.

Please go to and try searching using the following combination of words:

  • The name of the OEM + “contact information”

  • The name of the OEM + “PC support”

Here's how to find your computer manufacture and support contact info in Windows:

  • Windows 10: Select the Start  button, then select Settings > System > About > System Info

  • Windows 8.1: Open System by swiping in from the right edge of the screen, tapping Search (or if you're using a mouse, pointing to the upper-right corner of the screen, moving the mouse pointer down, and then clicking Search), entering System in the search box, and tapping or clicking System.

  • Windows 7 : Open System by clicking the Start button, right-clicking Computer, and then clicking Properties.

  • Windows Vista: Open System by clicking the Start button, clicking Control Panel, clicking System and Maintenance, and then clicking System.

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