Someone who knows a lot about computers comes in about the mainframe

CPU AMD Athlon64 x2 7750 (black box) 1 460

Motherboard Jetwave Hummer HA03-GT2 1 490 Memory Kingston 2GB DDR2 800 1 115 HDD Seagate 160G 8M (Serial Port 5 Years Box) 1234 300 Graphics Card Dilan Hengjin HD3870 GDDR3 1 599 Power Supply Great Wall Dual Power BTX-400P4 1 290 Total amount: 2254 yuan.

That's good, give it points.

If you want to play games, you need a discrete graphics card to buy a computer. Memory: 1g or 2gHard disk 160g.

It should be that the motherboard is broken: if it is a new motherboard installation, it is the wrong wire, and it is best to go to the computer store for inspection and maintenance.

Such failures are generally due to the following reasons:

1.The graphics card is in poor contact with the signal cable of the display, and it should be reinstalled.

2.The monitor itself is faulty, and this requires the display to be replaced.

Your situation should be a problem with the power supply, you turn on the fan normally, if the mouse and keyboard are also normal, the display screen is black, that is the problem of the power supply, the power supply is small or aging, if this is the case, you can change it.

The internal hardware of the computer host has,CPU,Motherboard,Memory module,Hard disk,Power supply,Chassis,Radiator,You also need to see whether the CPU is integrated with a core display,If there is a nuclear display, you don't need a separate graphics card to display,If the CPU doesn't have a core display, you need to buy a separate graphics card to use,Basically, that's all,The optical drive has not been used for many years,Xu has no special needs are generally not installed,

1. Chassis thickness. Now the thickness of many chassis is shrinking, many only left and right, it is easy to dent or deform, and a qualified chassis, the thickness is at least or, better can reach more than 1mm, in addition to not easy to damage, but also reduce the generation of resonance, so as to make the host more silent, at the same time the anti-collision performance is also good, but also more stable. Of course, the thicker the case, the heavier the weight, but considering that the desktop rarely moves, it doesn't matter how heavy it is.

2. Routing space. The mainstream chassis design is to walk the back line, so the arrangement of space and hole placement is very important. The distance between the motherboard tray and the side plate of a qualified chassis is generally about 2cm, if it is only about 1cm, it is considered very small, and it is not convenient to trace the cables.

In addition, the requirements for the wiring holes do not need to be too high, the mainstream holes are arranged on the right side of the installation position of the ATX motherboard, there will be a row of three holes, and some cases also have them under the installation position, mainly for power supply. It should be noted that if there is a hole in the CPU cable, if not, then you need to use a long cable to circumvent it.

3、。Now the UBS interface of the chassis is basically popular, if not, it's best not to choose, it's not a particularly old product or a copycat. But don't see a blue interface and think that there is, first of all, pay attention to the pin contacts of the lower interface, there are 5, but 9, in addition, there are generally two "ss" letters next to the interface.

4. Chassis width. ATX cases are in the mainstream, and although there are many users of small cases, in terms of heat dissipation and compatibility, ATX cases are the best choice for most people. The width of the common ATX case is 200mm, but it is best to choose an ATX case of about 210mm.

And the larger the width of the case, it is also good for later upgrades, after all, the performance of the graphics card is getting better and better, and the volume is getting larger and larger, so if there is no large chassis, it is really inconvenient.

5. The chassis is dustproof. If you don't want the case to be dirty after a period of use and have to clean the dust frequently, it is best to choose a case with a dust filter, which will generally be installed at the bottom or in the location of the heat dissipation hole, and the fan position may also be there. It is best to place the case in a place with less dust, or clean the area around the case regularly, or you can buy your own dust mesh cover and cover it when not in use.

Do not use too dense dust filters in the case, the denser the air circulation, the worse the air circulation, which is not good for heat dissipation.

1. Motherboard.

Computer chassis motherboards, which are divided into two types: commercial motherboards and industrial motherboards. It is installed in the chassis and is one of the most basic and important components of the microcomputer.

The motherboard is generally a rectangular circuit board, on which the main circuit system of the computer is installed, generally there are BIOS chips, IO control chips, key and panel control switch interfaces, indicator plugs, expansion slots, DC power supply connectors of the motherboard and plug-in cards and other components.

2. Processor.

**The processor is a very large-scale integrated circuit, which is the core and control unit of a computer. Its function is mainly to interpret computer instructions as well as process data in computer software.

**The processor mainly consists of combinators (ALUs, arithmetic logic units) and caches, as well as buses that enable the data, control and state between them. Together with internal memory and input and output (IO) devices, it is known as the three core components of electronic computers.

3. Memory. Memory is one of the most important components of a computer, and it is the bridge that communicates with the CPU. The running of all programs in the computer takes place in memory, so the performance of the memory has a very large impact on the computer.

It is used to temporarily store computing data in the CPU and to exchange data with external memory such as hard disks. As long as the computer is running, the CPU will transfer the data that needs to be calculated to the memory for calculation, and when the operation is completed, the CPU will send the result out, and the operation of the memory also determines the stable operation of the computer.

4. Graphics card. Graphics card is one of the most basic components of personal computer, the purpose is to convert the display information required by the computer system to drive the display, and provide progressive or interlaced scan signals to the display, control the correct display of the display, is an important component to connect the display and the motherboard of the personal computer, is one of the important equipment of "man-machine dialogue".

5. Hard disk. Hard disk is one of the main storage media of a computer, consisting of one or more aluminum or glass discs. The disc is covered with a ferromagnetic material. Hard disks are mainly divided into solid state drives, mechanical hard disks, and hybrid hard disks.

The vast majority of hard drives are fixed hard drives that are permanently sealed and fixed in the hard drive.

What accessories are there for the computer host, although many people know, but in fact, there are many children's shoes do not know, even if they know what accessories, there are many people who do not know which is which, know the name of the accessories and do not necessarily know where to install it, this issue will briefly introduce it.

There are 1 CPU ** processor in the computer host, 2 GPU graphics card, 3 motherboards, 4 memory modules, 5 power supplies, 6 hard disks, 7 CPU coolers, and some computers will have optical drives, and optical drives are to identify optical discs