Years ago, I was a field tech for compusa. If you bought an extended warranty with onsite service, i'd be the guy to come out and fix your computer. I dealt with desktops, servers and their mac equivalents. The last day on the job, I get stuck with replacing a motherboard on a toshiba laptop. Now mind you, i've never worked on a laptop before, had no service manual, and a day prior had a b!tch session with the dept manager (reason for my leaving). So I get the machine torn apart. Close to 3 dozen screws of various colors and sizes. Apparently toshiba used a layered approach. There was a very specific order in which the parts came off, and had to go back in.
Needless to say, I had a few extra screws left over and several other pieces. To make matters worse, the system still didn't post (turn on). Assuming the replacement part toshiba sent out was good, the only other conclusion is possible failed cpu. Or perhaps it was misdiagnosed. Anyways, I put all the extra parts into a baggy and left a note for the regular laptop guy, "needs further attention".
Lets hope the guy working on OP's bike isn't in similar shoes as I was