Assuming it was in a Windows system, your documents will be at
\Users\<YourUserName>\Documents
Pictures will be at
\Users\<YourUserName>\Pictures
Or, if it was a Windows 10 system, they could be at
\Users\<YourUserName>\OneDrive\Pictures
On some Windows 10 systems, the user name is simply "me", so pictures might be at
\Users\me\OneDrive\Pictures