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    • How to Solve “PXE-E61 Media Test Failure, Check Cable” Error

      How to Solve “PXE-E61 Media Test Failure, Check Cable” Error

      PXE (Preboot eXecution Environment) is a boot environment that Intel created. The PXE allows a workstation to boot up by using a network interface before it boots the operating system from the local storage devices such as the hard disk. When hard disk boot failure occurs, the computer will not boot up and a message

    • SMBus

      SMBus

      SMBus stands for System Management Bus, a simple two wire bus used in devices such as a computer motherboard for communication, mostly on low bandwidth devices. The SMBus was developed by Intel in 1995. One of the main duties of a SMBus is carry clock, data, and instructions from the motherboard to the device. It

    • How to Clean a DVD

      How to Clean a DVD

      DVDs do not require frequent cleaning. In fact frequent cleaning may spoil the DVD. Hence it is best to clean the DVD when it is absolutely necessary. You can clean the DVD before storing it and when you notice contamination on its surface. You can also clean the DVD when you find that the readability

    • Firmware

      Firmware

      We all use electronic devices, whether they are mobile phones, computer routers, MP3 players, cable boxes, etc. These electronic devices include hardware, the physical electronic components and software, programs that help these components run effectively. Firmware is a mix of both. Firmware Firmware is usually defined as a type of program that runs within an

    • CPU Speed

      CPU Speed

      CPU speed is not a good indicator of CPU performance. Many factors inside and outside of the CPU significantly impact the CPU and overall system performance. The CPU “CPU” stands for Central Processing Unit, and is also known as a “processor”. The CPU speed, or processor speed, is the amount of cycles that a CPU

    • How to Measure Signal Quality

      How to Measure Signal Quality

      Most people usually look to Signal to Noise Ratio to measure the signal quality of either audio or video communications. Signal to noise ratio is usually written either S/N or SNR. Most of the time the signal to noise ratio is measured in decibels. A decibel is a measure of power or loudness. Not to

    • Occupancy Sensors

      Occupancy Sensors

      An occupancy sensor is a device that is capable of detecting and/or recording the amount of people in a room or area. Occupancy sensors are most often used to determine how many people are in an area that may restrict the total occupancy or in a system that turns lights/other accessories off when no one

    • How to Burn a DVD

      How to Burn a DVD

      As the price of blank, burnable, DVDs has dropped over the past decade, the demand to learn how to burn a DVD has increased amongst computer users. Single-sided, single layered DVDs can now store 4.7 gigabytes (GB) of data, music, movies, or combination of the media types. If using a double sided, or dual layered

    • TOSLINK

      TOSLINK

      TOSLINK or Toshiba – LINK is a connection standard for digital audio streams. It is a standard which uses fiber optic cables. The important feature of fiber optic cables is that they convert audio signals into light impulses as opposed to electric signals. TOSLINK cables usually transmit their signals as the red LED lights. The

    • Lossy Compression

      Lossy Compression

      Lossy compression is a type of compression that removes unnecessary components of a file to reduce the file’s size. Lossy compression is often used in multimedia files, such as still images and audio files that hold a significant amount of redundant information. Lossy compression results in a reduction of quality of the file that is

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