Repairing a slow computer is usually not an arduous process. PCs usually get slow because of junk accumulation and too many narcissistic 'helper' programs loading at startup. It is a fallacy that a full hard drive causes a slow PC. It is actually rare that having too many files on your computer causes it to be slow. The three main tools to start off with in attempting to repair a slow computer are MSCONFIG, Task Manager, and Ccleaner.
MSCONFIG and Task Manager are the primary tools you use to stop useless processes and services from loading at startup. Regarding your computer being slow, think of your operating system (Windows or Macintosh) as a teacher with a classroom full of children. Some of the children are well behaved and some of them are not, but as more children enter the classroom and begin begging for attention, the teacher gets distracted and cannot do his or her job as well. It can take experience to know which processes and services to turn off, so if you haven't worked with MSCONFIG or Task Manager before, I advise you to turn off one service at a time and then reboot your computer to make sure everything still works. You can accidentally turn off your video or the relationship with your printer if you're not careful turning off processes or services.
Ccleaner can be run before or after MSCONFIG and Task Manger. Ccleaner may not have as direct of an impact on repairing a slow computer, but it will most likely make your WWW browsers work faster and better.
I will optimize your PC or Macintosh computer with these three tools for $30. If that does not improve performance markedly, then other software-related steps can be taken or it might be necessary to upgrade hardware.
The main two hardware upgrades that can speed up a slow computer are increasing the amount of memory in your computer and switching to an SSD (solid state drive). Increasing the amount of memory in your computer is typically a quick and reasonably priced process ($80 total for parts and labor), whereas switching over to a solid state drive is not as quick or as cheap, but has better odds of improving the performance of your computer.
If you have a Macintosh, the same software-related or hardware-related steps are taken, except that you use Macintosh software tools first to attempt to repair a slow Macintosh computer. On a Macintosh, the parallel programs are System Preferences>>Users and Groups>>Login Items and a 3rd party program called Onyx. If taking those steps does not markedly speed up your Macintosh, then the exact same hardware-related steps could be taken (i.e., upgrading memory or to a solid state drive). Depending on the Macintosh you own, either of these steps could be quite arduous, due to many Macintoshes (iMacs and some Macbooks) being specifically designed to be difficult to upgrade.
Give us a call if your computer is slow. It is possible that we can do some quick fixes over the phone or that your wireless Internet speed is the culprit (especially on the Macintosh).
Gentle, no-nonsense advice and perspectives on technology.