crnt open anything on desktop or log off by clicking mouse i have to press tab to get it onto logoff button then press space bar

Hi maxinew,1. Did you make any changes prior to the issue?2. What is the make and model of mouse?Try the following steps and check the result.Step 1: Check your desktop configurationa. Double-click My Computer.b. On the Tools menu, click Folder Options.c. On the General tab, make sure that Double-click to open an item (single click to select) is selected.d. Click Apply to save your settings change.e. Click ok and close the My Computer window.f. Check if the issue persists.Step 2: Reset the mouse buttons to their defaultsa. Click Start, point to Settings, and then click Control Panel.b. Double-click Mouse.c. On the Buttons tab, click Restore Defaults. If the problem impacts only a specific program, click the Settings button, choose that program, and then click Restore Defaults.Note: If Restore Defaults is not available, all your button assignments are already set to default mode.d. Click OK and check the result.See Resolve problems with mouse button or scrolling settingsVisit our Microsoft Answers Feedback Forum and let us know what you think.