If your PC is suffering from various problems, such as applications that are constantly crashing or hanging, your PC taking forever to load or to shut down, your applications responding sluggishly, spyware or viruses have infiltrated your system, or your high-speed Internet connection operating slower than a 56K modem, then it is time to run some computer diagnostic tools on your system to identify and root out these problems.
Computer diagnostic tools such as anti-virus and anti-spyware programs can eliminate and prevent threats from malicious hackers on the Internet who are intent upon wreaking havoc on people's systems.
Other very important computer diagnostic tools include Windows registry repair utilities. Your Windows registry is the master database that stores all of the vital information about all of the hardware and software on your system. If this database gets unoptimized or if any errors start creeping into the database, your system can become unstable and can exhibit slow response behavior.
No set of computer diagnostic tools would be complete without other miscellaneous utilities such as disk defragmentation utilities and memory optimizers.
Perhaps one of the single most important tools that you absolutely must not do without is a firewall. A firewall protects your PC (and even your entire network) from malicious intruders who are seeking to gain unauthorized access to your system through various hacking techniques. It restricts inbound and outbound access to only authorized, legitimate Internet traffic.
You need not be a computer geek in order to know how to use these utilities. You simply install and run them, and they take care of everything for you.