Need a Dell desktop computer disc

[Christie_8]

My computer is not working need a disc to start up and recovery

 

[velocityg4]

If your computer runs Windows 8 or 10. You can download the ISO from Microsoft and burn it to DVD or install it on a Flash Drive. Then you can try repair options or perform a clean install of Windows. This has the added benefit of a vanilla Windows install without all the Dell bloatware.
https://www.microsoft.com/en-us/software-download/windows8
https://www.microsoft.com/en-us/software-download/windows10

If it came with Windows 8 or 10 it likely uses UEFI. So you will need to use RUFUS if you want to make a UEFI Bootable Flash Drive.
https://www.eightforums.com/tutorials/15458-uefi-bootable-usb-flash-drive-create-windows.html

Otherwise you will have to contact Dell support and order recovery discs.
https://www.dell.com/support/contents/us/en/04/article/Product-Support/Self-support-Knowledgebase/software-and-downloads/dell-backup-solutions/Media-backup