Here are some simple things that you can do to determine what may be causing you pc to run slow.

Start by launching the Task Manager by pressing CTRL-SHIFT-ESC or right click on the lower corner of your screen and select Task Manager

Then click on the performance tab.

This will show you a summary of your CPU, memory, Disk Drives, Network and Video Card Usage

  1. If your CPU is running really high, or spiking, even when you are not doing anything  on the PC, then that means a process is drawing more than normal usage. If you clock on the processes tab you can see what processes are using those resources. Basically a program is running in the background and you can speed up the PC by clicking on end task. In some instances a virus could be causing a problem, or simply a legit program that using a lot of resources.
  2. Memory. This graph will show you how much of your memory you are using. If you are using more than 80% of your available memory then you will need to either upgrade your Ram or, again, click on the Processes Tab and see what is gobbling up all your memory
  3. Disk Drive (s). When your system is idle then your hard drive graph should be close to 0%. If it continuously runs high, then there is a probability that your hard drive is starting to fail, or there is a bug in the system that is causing it to run at above 90%.

If the drive is running at a high % then you can also run our hard drive test to determine the condition of the drive

Click on this Link 

and the Run Hard Drive Test and run the program. This will give you a very quick summary of the health status of the drive.

Upgrading to a Solid State Drive will also make a significant impact in increasing the overall speed as well as the boot up time of you PC and SSd drives now start at $39

 

If you computer takes a while to start up and you are using a lot of ram (more than 5gb on startup) then you can also speed things up by disabling programs on startup.

To stop a program or service from launching automatically as your computer starts up follow these steps

  1. Bring up your Task Manager by pressing CTRL-SHIFT-ESC
  2. Click on the Startup Tab
  3. You will see a list of programs and services that launch when Windows is started, along with the Impact it will have in slowing down your PC.
  4. To stop a service or program, simply right click on the program and click disable. This will not disable the program, it will simply prevent it from running in the background. You can also re-enable the program at any time