XPS 420 – Windows 7 and 8.1 64 Bit

This model and Operating System is not supported by Dell.

Successful Windows 10 64 Bit install reported on the Dell Community Forums.

Legacy BIOS

See Updating the BIOS.

Hardware Upgrades

SSD – Solid State Drives

RAM – Random Access Memory 4-8 GB recommended

Crucial Part: http://www.crucial.com/uk/upgrade/Dell-memory/XPS/XPS+420-upgrades.html

Refer to the Owner’s Manual when Adding/Removing Parts

Windows OS

For best results Clean Install wiping all partitions:

OS Updates

System utilities







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

Install the registry file and then the audio driver. New untested.

Card Reader

Dell Media Card Reader with Integrated Bluetooth Module (CAB-200), Media Card Reader 19-1 with Integrated Bluetooth*


Dell Backup and Recovery

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).

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