This issue can be caused by any of the below possibilities.
Not enough hard drive space.
Left over programs and bad files.
Missing Windows updates or outdated drivers.
Computer is overheating.
IF your computer has not been reboot recently make sure to reboot it before following any of the below steps.
Not enough hard drive space
Verify that there is at least 200-500MB of free hard drive space. This available space allows the computer to have room for the swap file to increase in size as well as room for temporary files.
Hard drive corrupted or fragmented
Run ScanDisk or something equivalent to verify there is nothing physically wrong with the computer hard drive.
Run Defrag to help ensure that data is arranged in the best possible order.
Remove or disable any TSRs and startup programs that automatically start each time the computer boots.
Tip: To see what programs are running in the background and how much memory and CPU they are using open Task Manager. If you are running Windows 7 run Resmon to get a better understanding of how your computer is being used.
If you've got an antivirus scanner on the computer, spyware protection program, or other security utility make sure it's not scanning your computer in the background. Often when these programs begin to scan the computer it can decrease the overall performance
of your computer.
Scan for malware
Today, spyware and other malware is a big cause of many computer problems including a slow computer. Even if an antivirus scanner is installed on the computer we recommend running a malware scan on the computer. Use the free version of Malwarebytes to scan
your computer for malware.
Verify that the Device Manager has no conflicts. If any exist resolve these issues as they could be the cause of your problem.
Make sure you have all the latest Windows updates installed in the computer.
If you are on the Internet when your computer is slow also make sure all browser plugins are up-to-date.
Update your drivers
Make sure you've got the latest drivers for your computer, especially the latest video drivers. Having out-of-date drivers can cause an assortment of issues.
Computer or processor is overheating
Make sure your computer and processor is not overheating. Excessive heat can cause a significant decrease in computer performance since most processors automatically step the speed of the processor down to help compensate compensate for the heat related issues.
Dust, dirt, and hair can also constrict a proper air flow on your computer, which can also cause a computer to overheat. Make sure your computer case is clean and fans are not obstructed.
Steps on cleaning your computer.
If you've had your computer for more than one year it's likely you're computer is not meeting the memory requirements for today. Today, we suggest at a minimum the computer have 1GB of memory.
Run registry cleaner
We normally do not recommend registry cleaners. However, if you have followed all of the above steps and your computer is still slow try running a registry cleaner on the computer.
Erase computer and start over
If none of the above solutions resolve your issues, it is recommended that you either reinstall Windows or erase everything and then start over.
If your computer is older than five years come to terms that it is likely the age of the computer that is causing it to be slow. Computers progress at an alarming rate as new programs and updates for programs come out their minimum requirements increase and
will cause older computers to slow down. If your computer is older than five years we suggest purchasing a new computer or just realize it is going to run slow because it is old.
Finally, if your computer continues to be slow after going over each of the above recommendations it's possible that your computer is experiencing a more serious hardware related issue such as a failing component in the computer. This could be a failing or
bad hard drive, CPU, RAM, motherboard, or other component.
Good luck !
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