Latitude D520 – Windows 7 and 8.1 32 Bit

This model and Operating System is not supported by Dell.

Legacy BIOS

Recommended Hardware Upgrades

SSD – Solid State Drives

It is recommended to upgrade it to 4 GB of RAM:

Refer to the Service Manual when performing hardware upgrades.

Windows OS

Windows 7 and 8.1 are now obsolete if you have these Operating Systems you should use them to take the Free Upgrade to Windows 10.

If you don’t have a Windows 7/8.1 license you have until the 2nd of October 2015 to upgrade to Windows 10 for free using the Windows 10 Insider 10130 as a stepping stone. See Free Upgrade from Windows Vista to Windows 10 (also works with Windows XP).

OS Updates




Try in order latest first, if it doesn’t work try for an older version.



For Windows 8.1 the audio driver is inbuilt to the OS and the registry file or older Sigmatel Driver should not be installed.


Dell Backup and Recovery

Only install if you have a larger than a 120 GB SSD/HDD

Note this system won’t be able to boot from a Rescue Disk (external hard drive) so make a Factory Backup (Bootable USB Flash Drive).


2 thoughts on “Latitude D520 – Windows 7 and 8.1 32 Bit

  1. Hi, thank you for the great guideline. I am following it to upgrade to Windows 7.
    Hope you can help the the issue I am facing with the Intel Chipset Device Software.
    The link takes me to Intel® Chipset Device Software (INF Update Utility) version 10.0.13 (Latest).
    However, when I download and check the Release Note, seems that this update is not for chipset of Latitude D520. Could you help me because I am not sure about that.
    And in that case, which version of chipset device software should I update for my D520?

    Thank you very much!

    1. I always install the latest version, it will update the chipset. I am on a D820 which is the same model with a bigger screen and used many of the same drivers.
      Heres a screenshot from the Intel Update Utility:
      Intel Update Utility D820

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