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A laptop computer can be a pretty big investment.  Even with prices falling dramatically, replacing a laptop can be quite expensive.  Laptop computer repair isn’t any cheaper unfortunately.  Here is a list of 5 of the most common mistakes that can send your laptop to an early grave.

1) Using your laptop near liquids - This is pretty self explanatory, but is regularly overlooked.  Don’t set anything liquid on the same surface as your computer.  If you must ignore this rule, drink only water and keep the lid on when you aren’t actually drinking.  If a spill does happen, water is a lot easier to recover from than your toddler’s favorite juice.

2) Closing the lid and immediately shoving the laptop into a backpack/briefcase - Most laptop computers are set up from the factory to auto-hibernate when the lid is closed.  Shutting your computer down properly is the best way to go, but if you are in a hurry, at least wait for the computer to turn off before you move it.  The platters in your hard drive spin at around 7200 RPM and the heads hover less than a hair’s width from the surface.  Even the slightest shock or bump can cause the drive heads to crash into the platters destroying the drive along with all of your data.  Even if you don’t cause a head crash immediately, you can significantly shorten the life of the drive.  Be patient, and you will avoid a lot of potential problems.

3) Leaving the AC Adapter (Power Cord) plugged in while storing/carrying your laptop - The power jacks in today’s cheap (ie. low quality) but popular laptops (Yes I mean you HP & Acer) are not soldered very well, and if mistreated, break very easily.  This type of laptop repair is difficult, therefore not cheap.  DC jack repair usually runs about $150 depending on the computer repair shop that you take it to.  The best way to avoid needing this repair is to unplug the power cord while you are not using it in order to avoid any kind of unneeded stress on the jack.

4) Using after-market/generic power cords - If you don’t follow the advice in #3, and are one of the lucky people who happens to break your actual power cord but not your computer, it can be really tempting to buy one of the $3 generic power cords on Ebay.  This is not a good idea because inexpensive AC adapters tend to not run at the exact voltage or amperage that your computer requires.  Over time, this incorrect power source will damage and/or wear out components completely destroying the computer.  Don’t end up replacing a $600 computer early because you tried to save $30 on a power cord.  Stick to genuine OEM ac adapters and you can avoid costly laptop repairs.

5) Using your laptop on your lap (or other soft surfaces) - Heat kills electronics, and your laptop computer needs to be able to “breathe” in order to cool itself.  Most laptops “breathe” through the bottom.  When you use a laptop on your lap, bed, or carpet, you cover up the air vents that your laptop needs to cool itself.  Not to mention you can develop a nasty problem known as Toasted Flesh Syndrome from using a laptop on your lap (this is why all “official” sources now call them notebooks instead of laptops to avoid lawsuits).  Always set a notebook computer on a hard surface that will leave the air vents unobstructed.  Consider buying a cooling pad for your laptop as well.  This is essential for computers that are easily damaged by overheating (anything from HP/Compaq).

Laptop repair can be expensive, but fortunately, most problems can be avoided with a little common sense.  One of the biggest mistakes that people make, but we didn’t cover, is thinking that you can get a quality laptop computer for less than $600.  Buying quality up front will also go a long way towards making your computer last longer.  This is a topic for another article though.

If you have any questions or tips of your own, please send an email to Service@chargerbuy.com or leave a comment.

Wi-Fi (/ˈwaɪfaɪ/) is a mechanism for wirelessly connecting electronic devices. A device enabled with Wi-Fi, such as a personal computer, video game console, smartphone, or digital audio player, can connect to the Internet via a wireless network access point. An access point (or hotspot) has a range of about 20 meters (65 ft) indoors and a greater range outdoors. Multiple overlapping access points can cover large areas.

“Wi-Fi” is a trademark of the Wi-Fi Alliance and the brand name for products using the IEEE 802.11 family of standards. Wi-Fi is used by over 700 million people. There are over four million hotspots (places with Wi-Fi Internet connectivity) around the world, and about 800 million new Wi-Fi devices are sold every year. Wi-Fi products that complete Wi-Fi Alliance interoperability certification testing successfully may use the “Wi-Fi CERTIFIED” designation and trademark.

To connect to a Wi-Fi LAN, a computer has to be equipped with a wireless network interface controller. The combination of computer and interface controller is called a station. All stations share a single radio frequency communication channel. Transmissions on this channel are received by all stations within range. The hardware does not signal the user that the transmission was delivered and is therefore called a best-effort delivery mechanism. A carrier wave is used to transmit the data in packets, referred to as “Ethernet frames”. Each station is constantly tuned in on the radio frequency communication channel to pick up available transmissions.

Internet access

A Wi-Fi-enabled device, such as a personal computer, video game console, smartphone or digital audio player, can connect to the Internet when within range of a wireless network connected to the Internet. The coverage of one or more (interconnected) access points—called hotspots—comprises an area as small as a few rooms or as large as many square miles. Coverage in the larger area may depend on a group of access points with overlapping coverage. Wi-Fi technology has been used successfully in wireless mesh networks in London, UK, for example.

Wi-Fi provides service in private homes and offices as well as in public spaces at Wi-Fi hotspots set up either free-of-charge or commercially. Organizations and businesses, such as airports, hotels, and restaurants, often provide free-use hotspots to attract or assist clients. Enthusiasts or authorities who wish to provide services or even to promote business in selected areas sometimes provide free Wi-Fi access. As of 2008 more than 300 city-wide Wi-Fi projects had been created. As of 2010 the Czech Republic had 1150 Wi-Fi based wireless Internet service providers.

Routers that incorporate a digital subscriber line modem or a cable modem and a Wi-Fi access point, often set up in homes and other buildings, provide Internet access and internetworking to all devices tuned into them, wirelessly or via cable. With the emergence of MiFi and WiBro (a portable Wi-Fi router) people can easily create their own Wi-Fi hotspots that connect to Internet via cellular networks. Now iPhone, Android, Bada and Symbian phones can create wireless connections.

One can also connect Wi-Fi devices in ad-hoc mode for client-to-client connections without a router. Wi-Fi also connects places normally without network access, such as kitchens and garden sheds.

City-wide Wi-Fi

In the early 2000s, many cities around the world announced plans to construct city-wide Wi-Fi networks. Doing so proved to be more difficult than envisioned, and as a result most of these projects were either cancelled or placed on indefinite hold. A few were successful; for example, in 2005 Sunnyvale, California, became the first city in the United States to offer city-wide free Wi-Fi, and Minneapolis has generated $1.2 million in profit annually for its provider.

In May 2010, London, UK, Mayor Boris Johnson pledged to have London-wide Wi-Fi by 2012. Islington in London already has extensive outdoor Wi-Fi coverage.

In 2010 Mysore became India’s first Wi-fi-enabled city and second in the world after Jerusalem. A company called WiFiyNet has set up hotspots in Mysore, covering the complete city and a few nearbly villages.

Campus-wide Wi-Fi

Many traditional college campuses provide at least partial wireless Wi-Fi Internet coverage. Carnegie Mellon University built the first campus-wide wireless Internet network, called Wireless Andrew at its Pittsburgh campus in 1993 before Wi-Fi branding originated.

In 2000, Drexel University in Philadelphia became the United States’s first major university to offer completely wireless Internet access across its entire campus.

Direct computer-to-computer communications

Wi-Fi also allows communications directly from one computer to another without an access point intermediary. This is called ad hoc Wi-Fi transmission. This wireless ad hoc network mode has proven popular with multiplayer handheld game consoles, such as the Nintendo DS, digital cameras, and other consumer electronics devices.

The disadvantage of this method is that vendors must not implement speeds greater than 11 Mbit/s(802.11b) and only WEP encryption is available, not WPA(2).

Similarly, the Wi-Fi Alliance promotes a specification called Wi-Fi Direct for file transfers and media sharing through a new discovery- and security-methodology. Wi-Fi Direct launched in October 2010.

Some devices can share their Internet connection, becoming hotspots or “virtual routers”.

$1.99 off on WiFi Adapter! Compare and check the availability now.

From Wikipedia, the free encyclopedia.

Laptop repair could cost much so that it is essential to take a good care of the laptop screen . The best way to prolong life of your laptop and its screen is to use it with a proper care.

1. Make a special cleaning solution or use commercially available cleaning kit designed specifically for use on LCD screens.
2. If you do not use a special commercial cleaner, the ideal solution is plain distilled water. If more heavy cleaning is needed a 50:50 mix of white vinegar and distilled water can also effective.
3. Make the cleaning mixture and keep it in a small container nearby.
4. Shut down your laptop before cleaning.
5. Apply the solution to a very soft cotton cloth; it is better to use lint-free lens wipes instead of a cotton cloth. A large cloth is best, since it will help to reduce the risk of leaving streaks across the screen from finger pressure.
6. Soak cloth in the cleaning mixture, then wring it out completely. It should be damp but not wet. Wipe the computer screen down gently in long motions rather than hard circles. Dry the screen with a dry cloth.
7. If your screen is damage or you prefer to replace with better one, you may find third-party companies on the market that are selling laptop screens since most laptop manufacturers charge too much.

Things You Will Need

• Distilled water
• A soft cotton cloth

Warnings

• Do not use paper towels, tissues, or napkins – they can contain wood fibers that can scratch the screen.
• Use either a soft, lint free dry cloth or a commercially available cleaning kit designed specifically for use on LCD screens.
• Using a lint-free microfiber cloth is best, an old cloth can introduce dust.
• Avoid using products such as Windex because these contain ammonia and it can degrade the screen.
• Do not use any products that contain alcohol, ammonia, or other strong solvents. Do not use soap.
• Do not spray any liquid directly on the LCD screen.
• It is better not use tap water, especially, if the water in your area is rich in minerals.
• Use only enough pressure to hold your cleaning wipe on the screen. NEVER press hard, scrub, or scour when cleaning an LCD screen.
• If in doubt, test a small area of screen first.

Apple iPad is launched in April, but in June, Shenzhen has cloned 10-inch ePad ZT-180, and the frequency can reach 1GHz. It lets its manufacturers (Shenzhen Zenithink) get a lot of profit. Although ePad’s Infotmic chip is not A8 core, however ePad is sold to the world, the world witnessed the cloning of Shenzhen speed.

Happiness is always short-lived. FLYTOUCH knockoff became ePad rival.

And then Zenithink CO,LTD. tries their best to seek innovative technology, finally releasing the latest version: ZeniThink 2 ZT-180, trying to back to the dominance.

ZeniThink 2 made great upgrade! New version ZT-180 used the same CPU as before, but upgrade the memory to 512MB and storage to 4GB, adds one HDMI port, one 1.3 mega camera, upgraded to android 2.2 os, improve workmanship and design both parts. The upgraded Zenithink 2 ePad, more excellent on function, more competitive in price!

ZeniThink 2 & FlyTouch 2 appearance comparison as below:

ZeniThink ZT-180 & ZeniThink 2 ZT-180 & FlyTouch 2 Specification comparision as below:

ZeniThink 2 zt-180 adopts ARM 11 based CPU, android 2.2 OS (support windows ce 6.0 OS at the same time), built-in wifi, support external 3G (TD,EVDO,WCDMA), takes it easy to surf online anytime anywhere, adopts the Li-ion battery, meets long-time travel requirement.
>>>Support 3G model as below:
WCDMA: HUAWEI E1750/E1752, ZTE AC581
CDMA2000 EVDO: HUAWEI EC122/EC189, ZTE MF110

FlyTouch 2: Flytouch is smaller than zt-180. You can see the interfaces are abundant: with 2 standard USB, 2 TF card (including a TF card is designed to save the map file used to store GPS), a LAN interface, a HDMI. (Maybe, it is the tablet with the most interfaces in the world!) .
ZeniThink 2: There’s an added HDMI out for viewing your movies on the big screen, which sits between a USB and built in MIC. an 3.5mm Earphone jack, 1 USB, 1 MINI USB, 1 DC jack .

FlyTouch 2: From left to right: WIFI, the left and right loudspeakers, menu/home, volume, power, mic, GPS interface and Stylus.
ZeniThink 2: From left to right: the left and right loudspeakers, Internet Port, power, TF-Card slot.

Amazon.com is the largest Internet retailer in the world, in the top 10 of a recent Tablet ranking, China tablet PCs held 4 seats, sales of the first of which is SuperPad, No.4 is the 7” Coby 8902 Tablet PC, No.5 is the 7” iRobot Tablet PC (VIA 8505), No.7 is Zenithink 10” tablet PC.

SuperPad, it is called Flytouch in Chinese. The basic configuration is: 10.1-inch screen, Infotmic 1 GHz chip, Android2.1 systems, recently has been upgraded to 2.2.

For previously customers only comes with Anddroid 2.1 system,  please download the manual, tools and firmware below to upgrade Superpad to Android 2.2?

Manual: Superpad Upgrade Manual
Tools: Upgrade-tools.rar
Android 2.2 Firmware:WWE10B_2.2_V1.4_U0M_GT2005.ius