There's lots of possibilities here.
First, tell us what the operating system is, and what kind of computer.
It would also help to know how much memory you have.
Do you have anti-virus and anti-spyware software installed and up to 
date? Run a full virus and spyware scan.
You may want to visit windows update also, to be sure you have the 
latest security updates.
Open My Computer, right-click on the "C" drive icon, select properties, 
and look under the General tab to see how much space is available on the 
drive. A nearly full drive can cause this problem.



Denise Matthews wrote:
>> My computer is running slow, and sometimes seems to lock, and also cannot get out of windows.
>> On the internet at times cannot get from website to another.
>> The screen sometimes goes blank with mouse (egg shape) only on screen.
>> The mouse will move but obviously nothing to point at.
>> I am thinking of installing a Registry Mechanic type of software, will this help.
>> I am quite new to computers just learning, have no idea whats wrong.

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