Worth trying to rebuild?

For those who knew about my adventures with my husband's deceased brother, I have emptied his trailer and found around 6 computers that he might have used for mining. I have not checked them at all yet and I don't know how long they have been in there. With the few Bitcoins left, is it worth trying to rebuild or should I sell the computers for parts or what? I don't know what all goes into building that, but he lived off grid so that's how he had the means to do mining I guess.