Free computer hardware books download pdf

Note: Modern computers have safeguards that shut down the system if a component is overhea ng. The performance will be slow. This problem is most likely if the computer is rather old and has had a newer and more memory demanding opera ng system installed. It will reduce the performance of the computer. Check to be sure if the computer is plugged in to an AC outlet properly. It ensures that all of the system's hardware is working properly before trying to load the opera ng system. If the computer does not pass POST, it will not boot.

Tip: Make sure the computer turns on. If nothing happens no lights, no sound, no fans, etc. Check to see that all of the cards are fully pressed down into the bus connec ons, that any socketed chips are fully pressed into their sockets, and that all cable connec ons are fully a]ached. Make sure that the drive cables are a]ached correctly. Dust can cause overhea ng problems and electrical shorts. Some mes, insects will nest inside the case as well. All of this needs to be cleaned out before you close up the case.

Take precau ons to avoid inhaling excess dust, and consider using protec ve eyeware if necessary. Some mes the hard disk will become corrupted by a user, or by a virus. Look for recent changes in your system's opera on. You may need to run an uninstaller program to remedy socware-related problems. The computer is unable to start up — If the computer does not turn on when you press the power bu]on, the following sugges ons may help you to determine why the computer will not start up.

A surge protector can be used in this case, because voltage surges can be very damaging to computers and other electrical components. Then put on the system to perform a POST.

Make sure that it is connected to a power source, and also that the VGA cable is connected to the computer. The computer screen is blank If the screen is blank, the computer may not be set to display the image on the computer screen. Fixing the power outlet in such cases should help solve the issue. Computer Hardware Repairs and 53 Maintenance You can perform this ac on whilst you get a Blue screen error or sudden system crashes. NOTE: Backup service is an assurance that your data is safe.

Trouble with video card — If the power light of the computer and monitor is on and nothing comes up on the screen when you start your computer then there must be something wrong with video card.

Change its video or the graphics card with a new one. Most of the mes, this should help you get rid of the problem. The computer is on but not responding — the computer is on but not responding to socware or keyboard commands, then it must be frozen or halted. An external device is not working — If an external device does not func on as expected. The power supply failure is a common problem in our country. RAM can fail or can loose from its housing and need to be reseated.

Hardware is the physical components of a computer system e. Delhi University Computer Centre. What is a Computer? An electronic device that stores, retrieves, and processes data, and can be programmed with instructions. A computer is composed of hardware and software, and can exist in a variety of sizes and configurations. Computer Hardware Tutorial Pdf Books Free download or read online another Pdf free Urdu book 'Computer Hardware' and learn every thing about computer hardware in your own Urdu language.

This Urdu book is authored by a great person with nick name of Jaan Leva who worked hard to create this masterpiece for beginners.

It is a device used to move cursor position on a monitor screen. A scanner allows you to scan printed material and convert it into a file format that may be used within the PC. A plotter is used to create high-quality visuals on paper.

Plotters were used in applications such as computer-aided design, though they have generally been replaced with wide-format conventional printers. A plotter gives a hard copy of the output. It draws pictures on a paper using a pen. It can be used to create presentation-charts, graphics, tables and high quality technical drawings. There are two types of plotter. Computer Abbreviations. MS Word Keyboard Shortcuts.

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