Can you please update us with following System configuration.
Opera ting System ?
Hard Disk Capacity ?
Third Party Security Installed other than McAfee ?
I have Windows 7
RAM 4 GB
Hard disk 451 GB
and there is no third party secuirty installed other than McAfee.
Please provide us with info and screenshots of your desktop when you are experiencing those problems.
I would like a screenshot of your processes tab in Task Manager.