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1, observation

Observation, is the maintenance process to determine first of all to France, which runs through the entire repair process. Observed not only seriously, but also to a comprehensive. To observe include:

1, the surrounding environment;

2, hardware environment. hp nc8430 battery Cover the plugs, seat and tank, etc.;

3, the software environment;

4, the user operating habits, the process

2, the minimum system method

Minimum system means that to judge from the maintenance point of view can start or run the most basic computer hardware and software environment. Minimum system has two forms:

Hardware Minimum system: from the power supply, motherboard and CPU component. In this system, there is no signal line connections, only the power supply to the motherboard power connector. In judging process is to determine by the sound of this core component of the possibility of working;

Software minimum system: from power supply, motherboard, CPU, memory, graphics card / monitor, keyboard and hard drive component. The minimum system is mainly used to determine whether the system to complete a normal startup and operation.

For software the smallest environment, the "software" has the following to state:

1, the hard disk of the software environment, hp pb994a battery retaining the original software environment, but in the analysis to determine, in accordance with the need for isolation, such as unloading, shielding, etc.). Retain the original software environment is mainly used to analyze aspects of application software to determine

2, the hard disk of the software environment, only a basic operating system environment (probably uninstall all the applications, or re-install a clean operating system), and then based on an analysis to determine the needs of the application of load required. Need to use a clean operating system environment is to determine system problems, software conflicts or hardware and software between the conflicts. 3, the smallest in the software system, may be necessary to add or change the appropriate hardware. Such as: in determining the startup failure, due to the hard disk can not be started, would like to check whether from the other drive. At this time, the smallest system in the software to add a floppy drive, or simply replace the hard drive with the floppy drive to check. Another example: In the judging audio and video aspects of failure, should be the minimum required in the software system by adding sound card; to determine network problems, it should be the smallest in the software system, by adding network cards.

Minimum System Act, mainly to determine first the most basic hardware and software environment, whether the system can work properly. If you can not work, you can determine the basic hardware and software components have failure, and thus play a role in fault isolation. Minimum System Law and gradually add the method combined, can occur more quickly locate faults in the other board software to improve maintenance efficiency.

3, and gradually add / remove method Gradually add the law to minimize the system based on a time to add a component to the system / equipment or software to check whether the fault phenomena disappear or change, in order to determine and locate fault position.

The phasing out of France, coinciding with the gradual addition method of operation of the opposite.

Gradually add / remove the law generally meet with the substitution in order to more accurately locate fault position.

4, isolation method

Is likely to hinder the fault diagnosis of hardware or software method of shielding a judge. ibm thinkpad r51 battery It also can be used to suspect that the conflicting hardware, software, fault isolate to determine whether the changes in a way.

Hardware and software mentioned on screen, comes to software, that is, to stop its operation, or unloading; for the hardware it is in Device Manager, disable, uninstall the drive, or simply go to the hardware from the system In addition to.

As a wireless network, an important part of the wireless network card can help users to immediately access the wireless network that supports mobile users, temporary workstations, shared network equipment and wireless multimedia, which makes choosing a suitable wireless card is not an easy one matter. acer batecq60 battery And looking at the market all kinds of various types of wireless network card products, not difficult to find, USB interface, wireless LAN, in particular, to support the USB 2.0 standard is no doubt wireless cards have the highest cost and compatibility.

As we all know, the mainstream market, the wireless card also has a wide range of models, brand number, price varies in different performance characteristics. Just from the point of view can be divided into three kinds of interface types - Standard PCI-based, PCMCIA type, USB type, non-standard MiniPCI type, CF type as well as SD-type and so on. Among them, a standard PCI interface, a wireless network card can only be used on the desktop, PCMCIA interface, a wireless network card can only be used in notebook computers, while the USB interface, a wireless network card can be used in any computer with a USB interface, this The main advantage of it. If the user wants easy to use, choose USB wireless network card may well be an excellent choice.

Transfer rate

Today, USB interface, mainly use two criteria - USB1 .1, and USB2.0. The former maximum data transfer speed of 12Mbps, while the latter can be as high as 480Mbps. As the wireless transmission protocol also has the highest speed limit, so in order to avoid creating bottlenecks on the market any products using the 802.11b protocol used in almost all USB1.1 standard, using the 802.11g protocol products use the USB2.0 standard. So, when a user in the purchase without having to worry about different standards brought about because of the speed bottleneck. In addition, the type of connection USB adapter can be divided into two categories: one category can be directly plugged into the computer's USB interface, this card has the advantage of portability, easy to use, easy bruising drawback is that card; and those is through a USB data cable to connect card and the computer, acer batcl50l4 battery the advantages of such a card is easy to protect the card, pleasing in appearance, one disadvantage is that more data lines, resulting in cable interference. Users according to their own needs to choose the right card type. USB wireless network card at present There are two main forms of appearance were: box-type and U-type plate. Box-based USB wireless cards come with a data extension, most of the antenna exposed, these designs make it easier to put on the desktop. U disk-shaped USB wireless cards generally have the data to extend the line, and its USB connector can also directly access the computer's USB port, U-shaped USB disk antenna are built-in wireless card, so adjust the antenna pointing inconvenience. A comparison, or U disk-type card is more compact and convenient.

In selecting the wireless network card, and purchase other wireless devices similar to the first look at its wireless standards, wireless standards is to determine the speed and price of the main factor when users purchase a wireless access point based on their transmission speed to carry out choice, faster wireless network card in general the higher the price. Meanwhile, the security of the wireless network card is also very important factor. If your wireless AP supports advanced security features, but the wireless card is not supported, then the high level of security features to no. Therefore, the user chooses to support security features as number of wireless cards. Finally, take note that after-sales service and warranty.

Optional Note

In selecting a suitable USB wireless network card, we also support the wireless network card wireless LAN standard to choose. Currently on the market of wireless LAN equipment can be divided into two kinds of IEEE 802.11b and IEEE 802.11g. Which supported the 802.11b standard card maximum rate of 11Mbps, acer aspire 3610 battery to support the highest rate card 802.11g standard up to 54Mbps, is 5 times the standard 802.11b and 802.11g wireless card can also support backward compatible 802.11b standard, has a higher nature and applicability, and can protect the user's equipment investment for the network card. In addition, the current 802.11b standard wireless network card products will be in the next period of time gradually eliminated by the market, so when the purchase card should try to select 802.11g standards.

Transmit Power - USB wireless network adapter is currently transmitting power more in 15 ~ 17dBm. The higher power can be transmitted from the more distant, so we try to choose products with a higher transmission power. Especially those who were well-known manufacturers introduced a new antenna technology, but also can improve the signal coverage of wireless network card for the mobile office and wireless LAN high-speed Internet offers new personalization options.

Audio Home type: used to replace traditional entertainment home desktop machine, with a large size screen design, tend to entertainment design, usually 16:9 screen design and screen, high brightness and viewing angle, in the sound design of the products are integrated for at least a 2.1-channel sound system and bass module integrated in the bottom of the notebook computer subwoofer to achieve the effect, and also to create a "lingering sound proudly, dell vostro 1700 battery on the 3rd is not never," the mood, and some models can also simulate 4.1 channel surround sound, and even direct ownership of 4.1-channel speaker. Therefore, these products are generally bulky and not easy to carry. Some of the products in the functional design features also features a TV, laptop computer to receive television pictures that nowadays the development of audio-visual notebook computer is a trend, usually such products will be built on the machine where a TV receiver, remote control can be achieved through the television reception, there are some other products also comes with video editing software, users can realize timing video, video capture and other operations.

Entertainment Game Type: With the constant application of new technologies, the performance of notebooks to enhance quality, independent graphics cards used to continuously update the notebook 3D performance in the test record of scoring, notebook against the era of desktop come quietly, entertainment gaming notebook on the market have sprung up, such products are excellent display screen, 16:9 performance coupled with powerful resolution independent graphics card, for gamers tailored, taking into account the needs of audio and video entertainment, superior overall performance, focusing on visual effects and video game-type effect of the gradual occupation of the entertainment market in a space.

UMPC handheld: UMPC full name of the Ultra-Mobile PC, Ultra Mobile Personal Computer, Intel and Microsoft are so hard to promote a product. UMPC to be a complete PC products and has all the PC computer to the functions, it also need to have a very good wireless connection technologies such as WiFi and Bluetooth wireless technology, techniques, and even HSDPA/3G equipped with high-speed data connectivity. At the same time, UMPC size of the product itself to the basis of thin and light design, portability is very strong, as well as long battery capacity. Another important feature that is, gateway s62044l battery UMPC also supports handwriting output function, and in Windows XP Tablet Edition systems can be used under the Touch Pack panel.

Flat handwritten type: also known as the Tablet PC, its appearance and the general notebook computer similar, but not an ordinary laptop computer, it can be seen as a condensed version of notebook computers. Between its appearance in general between the notebook and handheld computers, but its capacity is larger than handheld computers, than the laptop, in addition to its own all of its functions, also supports handwriting input or voice input, mobility and portability are more effective than that edge. Main features is its display can be freely rotated, the general use of small-size LCD screen, and were identified with a touch LCD screen, you can use electromagnetic induction pen handwriting. Tablet computers set of mobile commerce, mobile communications and mobile entertainment as a whole, with handwriting recognition and wireless network communication capabilities. Tablet computers are mainly two kinds of specifications: a dedicated tablet can be an external keyboard, screen and so on, as normal PC use. Another way for the notebook tablet can be opened and closed like a notebook in general. Tablet computers built itself a number of new applications, allowing the user to write on the screen, you can text or hand-drawn graphics will be entered into the computer. Tablet PC using Microsoft-specific Table PC Windows XP system, this is it and is one difference between ordinary notebook computer.

Thin and light portable: Generally speaking, 2kg less portable notebook computer called the (thin) notebook computers, portable nature of such products will be on the most important position, performance and functionality or interfaces can make sacrifices, so low -voltage version of the processor, low power consumption chipsets, low-specification of memory, low-power 1.8-inch hard drive, fanless design, limits are accompanied by thin, in the test, the performance of such products in general, but often the battery Life is relatively good, thanks to the extensive use of low-power devices. Portable notebooks are divided into two kinds of built-in optical drive and full plug-in, in the weight of the whole plug-in type to be superior. And, because there is no built-in optical drive, so in all plug-type interface in a portable notebook will be more outstanding performance, the only not "perfect" is the additional expenditure will increase (to buy an external drive), while the built-in optical drive type of portable notebook while eliminating the need for additional overhead, but the performance of the interface is not as good as all plug-type perfect, of course, different users have different requirements.

Business Type: Business Notebook in applications calling for absolute stability, security, a lot of the latest technologies are first used in such products, for example, was the most advanced fingerprint recognition technology, the most powerful hard disk data protection technology, the most outstanding Silent cooling system, hp dv9000 battery basically the first to appear in the business notebook. Business Notebook in the face of specific populations and use of design is rather dull, does not seek the pursuit of fashion and fancy Jacuzzi, mainly impression stable, generous. Overall, business notebooks pay more attention to the machine stable, reliable, and can not be too difficult to carry, with a rich interface and the design of a variety of security features.

PET surface by special processing, high transmittance, effects after use to keep images sharp, color clear, used in LCD monitor or LCD TV is ideal for indoor viewing. However, such protection does not take care of the design and paste outdoor users, a higher degree of reflective materials, apple a1185 white battery while leaving more easily on the surface traces of finger and oil copies.

The third: Outdoor Low-reflective

The only existing 98% of high light transmission and function of both anti-reflective LCD Screen Protector, specially designed for outdoor light environment, clear and sharp images, apart from also reduce 90% of ultraviolet rays, reducing the eye damage. Such protection paste designed for digital cameras, is also the most expensive price. At present the global market, outdoor low-reflective LCD Protector Japanese products, only Japan Arvel the latest ARM LCD protective film series a, ARM LCD protective film series is also currently the only market outside of Japan, 100% Japan-wide mechanical process of production LCD Screen Protector with Japanese manufacturers and Japanese Chamber of Industry proof.

On the current market price of mobile phone screen protective film 1-60 yuan price range, and the quality varies, and even the ordinary cellophane tape (PP material) as a protective film, the buyer, apple a1175 battery after the surface attached to the mobile phone LCD , there is no surface has been worn a few days too could not see the screen content, simply can not protect the screen, even worse is that buyers want to replace the protective film and can not tear off, only wipe with a hard object, with a blade scraping, ranging from scratches surface, while in damage to liquid crystal surface.

Now an analysis of several common materials:

1, PP material (similar to plastic bags)

Most of this material is the first generation of protective film, soft materials, the light transmission rate difference, It can hardly be scratch-resistant flowers, the role of anti-wear can only be dust proof point, the main role of big points, or psychological.

2, PET material

Transparent optical grade polyester film (PET) plastic coating special protection, acer travelmate 3260 battery the paste together the thickness of 0.050m / m transparent polyester (PET) release film of the composition; surface hardening up to 4H, good weather resistance, low adhesion Li and easy to tear, and has high light transmission rate of the optical effects and no residue glue after removal. A high degree Ting Xing, suitable for medium and large-size FPD monitors timely and easy to paste-coated air bubbles of the special design, can increase the beauty of the flat-panel displays.

While many notebook manufacturers have claimed that their notebook battery life time can be as long as the number of how many hours. A laptop when running on battery power, assuming that the battery is already full of electricity, the actual can use to three hours have also been very good. Therefore, gateway m505 battery this paper to introduce laptop computers to save power consumption of the seven skills, so you can extend the greatest possible use of battery time (mainly on Windows XP as an example below).

1. For the battery completely discharge if your notebook computer use for some time, appeared satisfied with the battery or a rechargeable battery is full can not be used to the scheduled time, when the battery check by Asus to fix this problem. Be Battlfm.exe copied to C: \ directory, and then restart the computer and enter the MS-DOS. In the DOS prompt, type "battlfm", press the Enter key, run the battery calibration procedure. At this point the computer itself will self-charging, the battery indicator will not care about flash or beep. First, the English instructions will appear five, acer black aspire one zg5 battery and then jump out of line in English prompts, prompts you to insert an external power supply and you should plug in an external power supply, the screen prompts "is charging, please wait for the next piece of information" in English prompts, until the battery has been charging saturation will automatically remind you to remove the external power supply, power supply after the computer itself will remove the self-discharge, the screen prompts the "discharge" in English suggest that the natural power-down until the machine shuts down the way, do not power off by itself until the computer automatically After the shutdown, please connect their own external power supply, no longer can wait until the power indicator flashes means that the charge has been saturated, thus the calibration process to complete the entire battery. Is best not to frequent the battery depth of discharge, otherwise the right notebook computer batteries may bring some damage.

2. Try not to use external devices for a number of external devices (such as C card devices, USB devices, etc.) when using the battery should try to unplug them to save electricity. Because some of the equipment, large power consumption, such as: USB port or PC card interface, external hard drive case, external drives and other equipment of the power consumption of the 5V 500mA or so, will considerably shorten the battery life.

3. Disable temporarily the use of equipment and interfaces in general, notebook computers some of these devices and interfaces within the access is not often used, gateway m680 battery if you use a notebook when the battery is used, then these devices and can be temporarily interface is disabled. BIOS where you can disable them, if you are using Windows 2000/XP operating system, it can also be in the "Device Manager" and double-click the device entry must be disabled, then open the "Properties" dialog box "General "tab," Device Usage "to" Do not use this device (disable). "