Why Computer is Slow
Your computer could be running slow, despite having run lightning fast a year ago, because of some of the following reasons:
Some people tend to overrun their computers with programs that they don’t even need. The OS is responsible for allocating RAM to all programs. So, what does it do when it runs out of extra RAM to allocate? It tells the programs to spare their least vital memory to a unique file on the hard disk called page file. The OS doesn’t have any other thing to do further as long as there is sufficient space in the page file and combined memory to hold each program’s memory. As a result, the computer slows down.
The most common reason why disk drives fail is due to wearing out of tiny ball bearings on which the disk rotates. This is what tends to cause the distinctive clicking and groaning noises of failed disk drives. Ball bearings do not suddenly wear out; they do so slowly over time. When that is happening, the performance of your disk drive degrades gradually until, one day, the small motor on your drive lacks enough power for spinning the disk anymore.
When you save or create a file, the computer writes the new file beginning at the last part of the previous file. All your files are therefore kept closely together on the hard disk of your computer, meaning that if you decrease the size of an earlier file – say by deleting a sentence on a document –the OS has to divide the file into two sections. The OS hides this division from you, but it remains. This is what is referred to as fragmenting a file. A fragmented file takes longer to load since your hard drive has to skip around in order to find every section of the file, thus slowing down your computer.
Malware and Viruses
Malware and viruses can slow down the performance of your computer as they disarray everything from phishing sites to pushing advertising or hijacking your browser. In the worst possible scenario, they can end up crashing the computer.