Hi there lets see if we can locate the problem for you
First we will try a clean boot and see if that eases the problem, if it does we will continue from there
In the search box type Msconfig and select the programme that appears at the top
1.In the System Configuration Utility dialog box, click Selective Startup on the General tab.
2.Click to clear the Load Startup Items check box.
NoteThe Use Original Boot.ini check box is unavailable.
3.Click the Services tab.
4.Click to select the
Hide All Microsoft Services check box.
5.Click Disable All, and then click OK.
6.When you are prompted, click Restart.
Is the computer behaving normally now ?