When it comes to a suitable computer for diy cnc, then my recommendation is to use a computer from a cash register. If you are looking for an ebay, a used one can be bought for about ~ 200 euros with a licensed WIN7. (Switching from 64-bit to 32-bit license remains)
They have a touch screen IN ONE HOUSING with a PC and better durability than home computers Click image for larger version.  Name: 20210310_091249.jpg  Views: 183  Size: 108.4 KB  ID: 29690Click image for larger version.  Name: 20210310_091845.jpg  Views: 175  Size: 74.1 KB  ID: 29691