Purchasing A Used Computer? Read This Before You Do
Purchasing a used PC can save you a lot of money but you have to be certain to evaluate the computer very carefully prior to buying. There is nothing worse than spending a lot of time getting a new computer all set up, customizing it to your liking, installing all your software on it and transferring all your files to it and having it fail soon after. Below are few of the primary items to check prior to buying a used computer. Getting a used personal computer is also a fantastic way to get a machine complete with upgrades such as a USB TV tuner for very little or for free.
Hard drives are probably the most critical component of any computer because a failure can mean losing your data. The mechanical components of a hard drive are virtually impossible to inspect before you a buy a computer. Buying a used computer involves a bit of a leap of faith as it relates to the hard drive. Hard drive failures can be caused by internal issues such as the needle slipping and scratching the disc which will lead to failure. Hard drive failures can also be caused by heavy 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. Usage makes older hard drives more prone to failure.
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 size of hard drive and amount of data on it affect the time it takes to perform a system scan. Full system scans can take several hours making it difficult to perform before buying a computer in some instances. It is highly recommended that a full system scan be performed before buying a used computer.
The CPU is another component that is critical to a computers performance. It is possible for the CPU to freeze. Freezing can occur due to 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. Inspecting the fan can be as simple as listening to it and looking for excessive dust buildup. 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 the computer includes a monitor is should be inspected too. A monitor that is close to failing will often have dull colors and will not be crisp. A fluttering picture and any easily discernible noise are worthy of concern as well. The health of a monitor is even more important if the computer has a USB digital TV tuner.
The operating system should also be checked. An operating systems performance can decline over time. A computers registry can slow a computer down as programs that are added and deleted from the computer make changes to the registry. 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. Ideally, after you purchase a used computer the hard drive will be re-formatted and the operating system and software reloaded.
Any other hardware should also be inspected. 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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