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Posts Tagged ‘laptops’

Most of us purchase used computers for the main reason that they can be purchased for a very lesser amount. When doing so, there is a high risk of purchasing a stolen computer, which can be passed off as a used computer. The incidence of purchasing a stolen computer is more when they are got in the name of used computers from third party computer dealers like the computer dealers online or from a theft store or from a pawnbroker who has no idea about the history of the computer he is selling.

Following measures can be taken to avoid buying a stolen computer:

One of the safe measures while buying used computer is to buy through a credit card or check payment rather than making cash purchase. If the seller insists on cash payment, the purchaser can be very sure that the computer may be a stolen one. Also stolen computers are sold at very low prices. If the buyer has good knowledge about the price trends of computers in the market, he can for sure find out if the computer sold as a used computer is of a genuine kind or not.

The place of buying used computer is of outmost importance as a reputed dealer or seller will have a well-established location. They do not sell on the streets. Hence, it is better to avoid buying used computers from the street side shops, which may be fly by night shops. Such sellers attract the buyers with the pricing or heavy discounts or even freebies along with the computers. If the buyer is not sure about the computer, he can very well ask for the documents pertaining to the computer or can find out if receipts are issued for the purchase. The best method of finding out is to check the serial number of the used computer that can be done with the help of the local law enforcement personnel.
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How many times have you experienced that sickening feeling when your hard drive suddenly fails? How many times have you experienced that your hard disk just does not boot and all the data may be gone forever? A hard drive failure is one of the most common problems and worst nightmares faced by computer operators all over the world. Precious data is lost either at home or in big corporate environments. What can be done in these situations? Well, there are certain solutions that can be performed by you in order to revive your hard drive. We will talk about the solution later. First, let us discuss why a hard drive fails.

Whether the data on the hard drive can be recovered or not depends on the extent of the problem. A hard drive can be damaged due to firmware corruption, electronic failure, mechanical failure or a logical failure. Many times your hard drive may lose data due to the combination of the above mentioned factors. A hard drive may also develop bad sectors due to which the data on those sectors is lost or becomes unreadable.

Firmware refers to the information used by the computer to interact correctly with the hard drive. If the firmware fails or becomes corrupted, then important data on the hard drive is lost. In case of an electronic failure there maybe occur an electrical surge that can knock out the controller board on the hard drive and make it unusable. However data can be recovered by data recovery experts who use special data recovery software. Swapping the controller board with another one can prove to be dangerous as the information on the controller board is unique to the hard drive on which it is fitted. In comparison to electronic failure a mechanical failure can turn out to be worst as data recovery can almost become impossible. Mechanical failure includes head crash and also read/write head failure. Head crash can occur due to physical shock, power surges and movement of the computer. Next come the logical errors. Logical errors have nothing to do with the hardware part. Logical errors can occur due to corruption of the file system on the hard drive or improper entries in the file allocation table. Read the rest of this entry »

Laptops can be sent back to the manufacturer if the purchaser finds the screen of the laptop scratched or with a minor blemish, or if it is an unwanted present to him or if the packaging of the laptop is dented etc. Such laptops are inspected, tested again for quality and repackaged by the manufacturer and sold for a very less price. Such laptops are called as refurbished laptops.

Factory refurbished laptops:

The laptops in the factory undergo rechecking for any manufacturing defect by passing through various stages of examination. Then, when no fault is found, the hard disk of the laptop is reformatted and again the operating system is loaded. It is again made to work for less than 4-5 hours time to check for any defect and the parts are replaced if they are found to be defective. The refurbished laptop is then updated with a new serial number to mark it as a factory refurbished laptop. Such factory refurbished laptops are of high quality available to the consumer at a lesser retail price. Such refurbished laptops can be got from almost all the renowned brands. However the process carried out for the restoration of laptops may differ from company to company. The main aim is to make the laptop run again efficiently as it used to be previously.
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It is very important to check a used computer thoroughly before buying it as it may lead to problems in the future. A hard drive will not show any outward signs but may be deteriorating. The same way the needle can suddenly slip and can cause scratches on the disc ultimately leading to memory loss as used computers can fail any time. If they are checked, the faults which may occur can be known. Let us first see the possible faults which may occur while purchasing a used computer.

Hard disk failures can happen due to heavy wear and tear over a period of time. The read and write heads of a hard disk are used to retrieve or recode data stored on the hard disk with the help of a disk platter rotating at a high speed. Over a period of time the risk of failure or malfunction of disk increases. Faulty sectors of the hard disks can be found out only if a full surface scan is done on the used computer. The scanning time depends on the capacity and size of the hard disk of the used computer. Many skip this procedure due to the time consuming process of scanning the whole disk and end up purchasing a used computer with a faulty sector.

Monitors need to be checked for any faults. The malfunctioning of a monitor is called a “dry joint” which results in the monitor not working after getting warmed. This can be checked only if the monitor is made to work for at least 20 to 30 minutes after switching on the computer.
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