You are on right website to fix your home PC problem yourself. Over the years as a IT support and design Professional, I have found that most causes of computer trouble fall into one or more of three specific categories:

 1.Hardware issues: Problems in the hardware area cover the hard components of the computer; the power supply, the motherboard, the memory chips, the cpu, the cpu sink, the various cards and parts that make up the actual physical presence of the computer. 
 Because the first thing a computer does when it is turned on is check out its hardware, issues in this area tend to show up immediately upon powering up.However, sometimes hardware issues don’t show up until the computer has been running for a while. If that happens, the cause of the problem will have something to do with the computer overheating and the heat causing the malfunction.

 2.Operating System Issues: For our purposes here, the operating system we will look at is Windows XP. Problems with Windows XP usually arise when some process or event has corrupted or deleted settings or files that Windows depends upon to run smoothly. 
 At the core level, the method that Windows uses to track what is installed and removed is through the Windows registry. This registry file is quite often the source of Windows problems.You might see errors about dll files missing, or cab files being overwritten, or you might see that Windows just won’t start, or it will start, but then crash with the “blue screen of death”, a not so happy term for a the blue screen of death that is associated with Windows physical memory dumps.There are some good programs on the Internet that are written to fix registry errors, so some self help solutions are available. Windows issues can also be traced to the user profiles that are set up for each individual user who logs on to a particular computer. These profiles can get corrupted, and cause weird behavior. At that point, the offending profile may need to be deleted and a new profile created to fix the problem.

 3.Software problems: Software issues are the main cause of most computer problems. There are so many different software programs, all written in different code, all trying to talk to each other and work together without having conflicts. Inevitably, just as in human interactions, there are conflicts, and these can cause overall computer issues. 
 The best way to avoid these types of problems is to keep track of what you install on your computer.Watch how your computer behaves after you install a new program. If your computer begins to slow down or act strangely, you can troubleshoot the issue by uninstalling that program and seeing if the problem is resolved.That’s really the best way to view computer troubleshooting, in my opinion. Know your computer, and keep track of anything new you do with it. Then when a problem shows up, ask yourself, "Since the last time my computer was working fine, what changes were made?" In this way, you can quickly narrow down the possible causes to the most likely culprit.

Click here to Troubleshoot your Home PC Problem and get important tips on how to avoid it from happening again.