First off, if you have work/proprietary code on the laptop you should be asking the company to fix it and follow their procedure.

Second, if we're talking about my laptop.. I use Linux and a fairly open hardware device so I simply order replacement parts online and fix it myself. I can't imagine sending my laptop away to get it fixed.

If I can't fix it.. I remove all working parts and toss in a supply box. I toss the device carcass in a pile in my garage in hopes of finding a use some day, and order a new laptop.