That's right - the text instructions are correct, but the images are not - which I understand is a bit confusing since this laptop I was disassembling at the time had clearly been disassembled before. The manual is pretty clear that the BC screws (rounded) are for the back and the BL screws (flat) are for system motherboard.

Glad to hear this guide helped! The 2400c is such a great little notebook.

Thank you very much for the comment! I have updated the step to reflect the location and the note on reassembly. Im very happy this guide helped you get your 2400c booting again!