Is a post with some hundred Toshiba disassembly posts. No, I don't have your machine but have worked on too many laptops and desktops and more over the years. I've learned to be gentle and keep looking for hidden screws under rubber feet and stickers over the years.

But let's look at this Pentium 2 Intel BX chipset machine. In almost all cases we are limited to 128MB sticks. In a few cases just a pair of 64 MB sticks will work.

If it has 128MB of RAM I'd leave it as is.
Bob