I downloaded a load cell model from a website. The first two times it opened as normal. However, I could not see it anymore when I opened the model again. I attached a screen capture of the assembly. I did not hide the assembly, I did zoom to fit to make sure the view location was fine. However, it did not work. Please help
Expand your sub-assembly feature tree and make sure you've the part files in there. It seems you download some file which was in different format and opened that in the SolidWorks. Now you're opening only the assembly files OR SolidWorks is not able to find the required part files.
Look where the original file was and make sure the converted part files are there.
I've seen this happen a few times lately. Did your assembly re-appear after you re-started SW?
Expand the Model Tree for the sub-assembly in the asm. Are any components hidden?
Cheers,
Anna