@ Michael Wojcik Dell not unbreakable but....
...at least easy to break up.
Older Dell laptops were bulletproof construction-wise. Later models not quite so -- issues with keyboard mechanics (who approved that ultra-fragile butterfly mechanism under the laptop keycaps ?) and power connector burning out.
However, I was charmed by the ease of dis-assembly of the two (Irish built) heavily used D505 and D510 series models I recently took on. With luck a third will turn up and I'll be able to build one that actually fully works.