The question is above.
Unfortunately I don't find that on my laptop in German
Windows memory diagnostic already says what it is. Memory = memory. I guess the ram is checked (errors may be "diagnosed". The whole thing takes place on Windows computers. This is a Diagnostic "Tool" from windows.
A diagnostic tool for your working memory
Complement: Perhaps the entire hard disk space can also be checked. In any case, the memory is checked.
I found that.
The bootable Windows Memory Diagnostic puts the working memory through its paces. Windows Memory Diagnostic The only 639 KByte freeware tool is installed on a bootable floppy disk or CD… Depending on the size of the memory, Windows Memory Diagnostic takes around 30 minutes to complete the test