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Buying A Used Computer Does Not Need To Be Nerve Racking
Buying a used computer is an excellent way to save money as long as you are cautious about which computer you decide to purchase. The primary worry with purchasing used computer is that shortly after you get it all set up and running it crashes. Fortunately there are some simple steps you can take to diminish the risk a used computer being a lemon. Getting a used PC is also a fantastic way to get a machine loaded with upgrades such as a USB TV tuner for very little or for free.
The hard drive is very important and probably the last component of a computer that you would want to fail. Unfortunately it is tough to inspect the mechanical components of a hard drive before you buy a computer. So a hard drive that will failure very soon may not show any outward signs that it is deteriorating. There are a number of mechanical components in hard drives that can fail. Some hard drive failure is due to mechanical failure others are due to ordinary wear and tear. The high speed which modern disk drives spin at mean the read and write head is a common part of a disk drive to fail. Over a time the risk of failure or malfunction of a hard disk increases.
Full system hard drive scans can detect and repair potential problems with hard drives. Certain bad disk sectors are easily detected and repaired by performing a full system scan. The scanning time depends on the capacity and size of the hard disk of the used computer. Performing a disc scan is not difficult but many skip it because it can take a few hours to do a full scan. Skipping a full system scan before buying a computer is not recommended.
Another component to inspect is the central processing unit (CPU). CPUs can freeze completely or cease to operate properly. The primary cause of CPUs freezing is overheating. Computers have a fan and heat sink to keep the CPU from overheating but fans can wear out and dust build up can keep them from operating properly. It is fairly easy to check if the fan is functioning properly by listening to it and looking for excessive dust. When functioning properly, a fan should produce a quiet, consistent sound. A fan that is not working properly will often emit an uneven sound in volume or tone.
If you are buying a monitor it should have crisp colors and be bright. Dull or muted colors are signs that a monitor is near the end of its life. A fluttering picture and any easily discernible noise are worthy of concern as well. The health of a monitor is even more crucial if the computer has a USB digital TV tuner.
A computers operating system should be checked as well. An operating systems performance can decline over time. The registry can also become cluttered with deleted programs. More most people about the only way to inspect a computers operating system is to reboot is several times. A computer that takes an excessive amount of time to boot up can be a sign of an operating system that needs attention. Probably the best option after you purchase the computer is, if you are comfortable with it, to reformat the hard drive and reload the operating system and all drivers and programs.
All other hardware should also be checked. For instance, CD and DVD drives should open and shut easily and your should be able to read and write data to a disk. Other items that should be inspected are the USB TV tuner card, mouse and keyboard.
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