Thinkpad T30 Disassembly for foreign materials within

I noticed something is moving around inside my laptop and started to open it until getting at the system board level. It is anyhow down and waiting for DIMM (512MB DDR PC2100S from http://www.usanotebook.com/). It was good time to investigate what is walking around. Found out plastic boby for female thread is broken and the coressponding bolt with nut is spinning around. Reassembled my laptop and still same thing.