Showing posts with label Laptop Care. Show all posts
Showing posts with label Laptop Care. Show all posts

Friday, October 23, 2009

How To Avoid Laptop Battery Overheat

One of the most common issues with laptop batteries is overheating. Not that the batteries are designed poorly or improperly but due to, in most cases, user wear and tear. While the laptop is using the AC adapter for power the battery acts as a back up in case of a loss of power or accidental unplugging. During this AC power use the battery becomes hotter than it would if being used independently. To lessen the chances of this overheating, which leads to a shorter life expectancy of the battery, keep the AC power adapter plugged in only if you need to charge the battery while using the device.
If the battery is consistently hot to the touch, remove it and allow it to cool down first making sure it is close to room temperature before reinserting it. Should the battery continue to overheat or get too hot it will probably need to be replaced. Always replace a defective battery as soon as possible as it could cause irreparable damage to the laptop in question. In addition to overheating failure to charge or hold a charge is another very common issue with
laptop batteries.

First check to see if the AC adapter is securely plugged into the device; the tightness of the connection will vary form laptop to laptop but it should be held in place well. To check for a good connection look for the battery charging LED if one is present on your laptop. If it is not on wiggle the cord to see if the connection makes and breaks contact. If you notice a flickering LED light then the solution is a new adapter which is far better than needed to purchase a new battery or a new
DC power jack which can be repaired by a common user with a little instruction and help.

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Wednesday, October 21, 2009

Types of Computer Viruses

A computer virus is referred to as a computer program that can copy itself and infect a computer. “Virus” is commonly used to indicate other types of malware, adware, and spyware programs that do not have the reproductive ability.

A real computer virus can only spread from one computer to another when its host is taken to the target computer. The virus is contracted in some form of executable code.

Below are a few examples of computer viruses:

Direct Action Viruses
Replicates and takes action when it is executed. When a specific condition is met, the virus will go into action and infect files in the directory or folder that it is in and in directories that are specified in the AUTOEXEC.BAT file PATH. This batch file is always located in the root directory of the hard disk and carries out certain operations when the computer is booted.

Resident Viruses
This type of virus is a permanent which dwells in the RAM memory. From there it can overcome and interrupt all of the operations executed by the system: corrupting files and programs that are opened, closed, copied, renamed etc.

Examples include: Randex, CMJ, Meve, and MrKlunky.

Trojans or Trojan Horses
Another unsavory breed of malicious code are Trojans or Trojan horses, which unlike viruses do not reproduce by infecting other files, nor do they self-replicate like worms.

Boot Virus
This type of virus affects the boot sector of a floppy or hard disk. This is a crucial part of a disk, in which information on the disk itself is stored together with a program that makes it possible to boot (start) the computer from the disk.

The best way of avoiding boot viruses is to ensure that floppy disks are write-protected and never start your computer with an unknown floppy disk in the disk drive.

Examples of boot viruses include: Polyboot.B, AntiEXE.

Macro Virus
Macro viruses infect files that are created using certain applications or programs that contain macros. These mini-programs make it possible to automate series of operations so that they are performed as a single action, thereby saving the user from having to carry them out one by one.

Examples of macro viruses: Relax, Melissa.A, Bablas, O97M/Y2K.

Directory Virus
Directory viruses change the paths that indicate the location of a file. By executing a program (file with the extension .EXE or .COM) which has been infected by a virus, you are unknowingly running the virus program, while the original file and program have been previously moved by the virus.

Once infected it becomes impossible to locate the original files.

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Article Source: http://www.articlesbase.com/computers-articles/types-of-computer-viruses-1364246.html

Saturday, October 10, 2009

Laptop Screen Care Tips - Guide to Complete Laptop Screen Care

The laptop screen is a delicate part of the laptopcomputer and apparently the most expensive part of the laptop computer. Lets take a closer look at the laptop computer screen, why it is essential to take care of the laptop screen and how exactly can you safeguard the screen. Before that, let me brief you on the anatomy of a laptop screen. Laptop screen is made of Liquid Crystal display or LCD as we better know it. LCD compositions comprises of individual transistors at each pixel (the minute dots that form images on the laptop screen). Laptop screens could have as many as 1,500,000 pixels. Every pixel is known to have an individual liquid crystal/ transistor combination. Even if a single combination is damaged you might have a permanent black mark on the laptop screen. This seemingly small black spot will not make your laptop unusable. However, if you happen to physically damage the laptop screen through scratch marks or abrasions you will lose much more than one pixel.

Laptop Screen Care Tips: -

Cleaning Laptop Screen - Use a computer buff to clean your laptop screen. These are very handy and can also double up as mouse pads. One of the bestlaptop screen protector, buying laptop buff does not burn a hole in your pocket. Even if you have oil or dirt marks, computer buff will take care of it in a single swipe. Also, finger prints are also something which are clearly visible on the laptop screen. Avoid touching the laptop screen. Avoid use of paper towels or rough cloths to clean; this might worsen things rather than resolving them.

Laptop Screen Protection Shield - Use laptop screen shields also known as laptop bullet proof shields to safeguard the sensitivity of your laptop screen. Laptop protection could not get any better. We know how tough it would be to deal with scratch marks on laptop screen. Avoid using alcoholic cleaners if you are not sure of the amount to be used. Some cleaning liquids need to be diluted with water before use. Besides, certain laptop cleaning liquids use ammonia that spoils the screen and makes it brittle and yellowish in color.

Laptop Physical Damage - Other than cleaning and protecting the laptop using computer buffs and laptop computer shields, you ought to know that simple poking could also damage the laptop screen. For instance, if you are making a laptop presentation never use pointed objects like pencil or pen to point out something on the laptop screen. If you find it difficult to use the mouse cursor, change the size or shape of the mouse cursor from the Control Panel.

The best way to safeguard your laptop computer and laptop screen in particular is to use it with care. Laptop repair could cost much more than the laptop maintenance and laptop care. Apart from the laptop screen protection, you also need to ensure the laptop exterior is not damaged. For this you can use laptop skins which are available in the market. You could even get a variety of it now. Many companies like HandStands have now come up with numerous laptop accessories likelaptop bullet proof shields and computer buffs that help you in this endeavor. All you have to do is pick one!

Schreiberistic has been an avid gadget and gizmo fan. Some of her favorites are laptop accessories and various automotive accessories and computer accessories. She has been using these accessories from one of the best laptop computer accessories and iPod accessories provider

Article Source: http://www.articlesbase.com/laptops-articles/laptop-screen-care-tips-guide-to-complete-laptop-screen-care-558322.html