"My recent documents" on the win7 computer shows the reason for being empty

The computer always records some of the documents we usually open on the computer. In general, the document history we have viewed will be seen in my recent document list, but sometimes the list of recent documents will be empty, and the history of recent document browsing will not exist. How to solve it?
Method 1:
1. In the Run dialog box, type "ldedit" to open the registry, and then expand to the "HKEY_CURRENT_USERSoftwareMicrosoftWindowsCurrentVersionPoliciesExplorer" option;
2, then on the right side of the window Find the “ClearRecentDocsOnExit” key value and delete it directly, then exit the registry.
Method 2:
1, run “gpedit.msc”, press Enter to open the group policy, and then expand "User Configuration - Management Template - Taskbar and Start Menu";

2 Find on the right side and “do not keep records of recently opened documents”,“clear recently opened document records when exiting"; both items are set to “not configured”. System world official website win7 xitongtiandi.com