Don't you have a manual? Most of the time the schematic diagram is part of the manual which is on the Mother Board CD. If you have a manual we will follow a different route of troubleshooting then if you have no manual. My suggestion is that you acquire 1 manual, 1 motherboard CD disk, 1 CD/DVD with the OS on it and 1 more CD/DVD with the drivers on it. The last two disks are to have the installer as part of their content. You have to remember that MB's are very delicate and can be damaged easy. The only part of the computer is not the mother board. The MB has the following parts: (1) The BIOS, which controls the computer inputs and outputs upon start-up for a few seconds until the nest step takes over. (2) The Central Processing Unit (CPU), which controls all processing and sequencial effects. The CPU, also, generates and controls the radio signal that carries the computer information (something like a composite TV signal), plus it interrogates the Random Access Memories, to store signal, to remove signal and to move signal to another location. With modern computers there is more and more pressure on the CPU, which is asked to perform manumentals tasks at very high speeds, speeds that genrate many joules of energy, which is removed by the cooling system (heat sink and blower or a cryogenic generator). It is always suggested to buy a MB that has the CPU installed at the factory, where every care has been taken that no heat will remain on the CPU chip. Modern computers have another chip for doing the mathematics, but even though it does not get as hot, it does require cooling, also; (3) the Random Access Memories (RAM). Their role is to replace the Hard Disc or parts of it, so that there will be no moving parts during the execution of a program and thus incrase the speed of operation. (4) The Video processor, which prepares the video signal, so it can be recognized by the Video processor and projected on the screen. (5) The Audio processor, which prepares the Audio Signal, so that it will be recognized by the audio processor and fed to the audio amplifier and speaker. (6) On the upper left side of the board there are conectors for various purposes, some older type like an RCA audio socket and the others, the modern ones are the USB sockets. There originally was one kind of USB connectors, but later it was realized that their speed was not exactly dazzling. So another type of USB 2.0 sockets and connectors were designed. The plug of a USB can be plugued in both sockets just as easy. The Video connector has remained the same for several years now, where the RCA sockets and plugs were replaced by better more efficient, miniature sockets with their corresponding connectors. As we almost said in the bottom part of the Board there are sockets with their connectors in line and they are called the PCI sockets, where one can connect a PCI board. Almost all desktop boards are PCI, where the Laptops are endowed with the modern looking PCMCIA sockets and corresponnding connectors. Finally we can look at all the things that the Mother Board does and be amazed.
A Computer also has a sophisticated Power Supply, properly cooled and toward the front of the computer there are slots for the various plug-ins that require external intervention. There you will find the HDD's, the floppy, the CD/DVD Drives, plus a number of other ainsileries that plug in and do medical radiography, or other inductrial functions. There are huge computers at banks and other financial institutions. The computer owned by the Social Security, a highly specialized financial computer, is the largest computer in the world.
Jun 15, 2009 |
Computers & Internet