A Couple of old computers
I acquired a couple trash find computers (I think they might be DOS). I haven't looked at their hard drives yet so I don't know if there used to be an OS on it. One of them is a Packard Bell (it works; the battery is dead so I can't get it to read the disk), and one of them is a Zenith (it doesn't work, but it emitted an extremely loud beep). I managed to get the Packard Bell to run off of MS-DOS. I have a feeling the Zenith doesn't have a BIOS, because it didn't say anything. However, it still has RAM and a CPU. Both have CD ROM drives, and a floppy drive (I took the floppy drive out of the Zenith to use on my computer, even though I still need a power cable).
Dell Dimension 8300, 2GB RAM, Pentium 4 HT 2.60 GHz, 2 80GB HDDs, Radeon HD 3650