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Short for unbuffered (or unregistered) dual inline memory module, UDIMM is a type of volatile memory chip, used mostly in desktop and laptop computers. It is a conventional type of RAM. Modern DDR memory chips are a type of UDIMM. UDIMM usually runs faster than RDIMM (registered dual inline memory module) in systems with only one or two modules per memory channel. However, in computers that use three or more modules per channel, such as high-end workstations and servers, RDIMM can increase efficiency and reduce latency....

Laptop battery is not charging Why is my laptop computer not charging the battery? Laptop battery charges but doesn’t last long It is normal for a laptop battery to lose its ability to hold the maximum capacity as it ages. If your laptop can charge the battery, but it doesn’t last long enough or holds 25% or less of its maximum capacity, it should be replaced. Computer battery buying tips Related information How to determine the maximum capacity of your laptop battery....

Free icons are available on numerous sites on the web. Below is a listing of sites that allow you to download free icons for Windows, macOS, and commercially. Free Icons - Hundreds of thousands of icons available in ICO, PNG, and ICNS format. Icon Archive - Another great site with thousands of icons available in multiple formats. IconsPedia - Free icons in numerous categories. SoftIcons - Free icons avialable for download....

Difficulty Very easy Steps 2 Time Required 40 seconds Sections Why! NV41MZ Bottom Cover Replacement 1 step Why! NV41MZ Battery Replacement 1 step Flags 3 Bullets! Better coordination with markups and the color/type of bullets will help make this guide more clear! Member-Contributed Guide An awesome member of our community made this guide. It is not managed by iFixit staff. Better Introduction Improve this guide by completing or revising its introduction....

Difficulty Easy Steps 9 Time Required 15 minutes Sections 2 Battery 1 step LCD Screen 8 steps Flags Member-Contributed Guide An awesome member of our community made this guide. It is not managed by iFixit staff. Better Introduction Improve this guide by completing or revising its introduction. Backwhy! W650SZ Laptop Full Screen Options History Save to Favorites Download PDF Translate Get Shareable Link Embed This Guide Notify Me of Changes...

Setting up Active Directory using the run command dcpromo is a straightforward procedure. To begin, from your Windows 2003 Server desktop, go to Start, click on Run, type dcpromo and hit Enter. The “Welcome to the Active Directory Installation Wizard” should come up: Click on Next. In the following window, you will get a warning about comparability issues with older operating systems. Improved security settings in Windows Server 2003 affect older versions of windows like Windows 95 and Windows NT 4....

For a video game system, the Xbox has relatively few serious problems that make it unusable. These are the most common problems: You can try to manually open the drive with a straightened paper clip. For most Xbox disk drives, the hole is located to the left of the eject button. Press the paper clip into this hole to pop the disk drive out. If this does not open the drive, you may have a Phillips drive, and the hole you need to use is located under the Xbox logo on the drive....

Difficulty Easy Steps 4 Time Required 5 minutes Sections 1 Printhead 4 steps Flags Featured Student Guide This guide has been the hard work of our awesome students and is found to be exceptionally cool by the iFixit staff. BackZebra ZP 505 Full Screen Options History Save to Favorites Download PDF Edit Translate Get Shareable Link Embed This Guide Notify Me of Changes Stop Notifications Introduction What you need Step 1...

Short for Electronic Delay Storage Automatic Calculator, EDSAC is an early British computer considered to be the second stored program electronic computer, after the SSEM. It was created at the University of Cambridge in England, performed its first calculation on May 6, 1949. It also has the distinction of being the first computer to run a graphical computer game, an implementation of tic-tac-toe called OXO. The picture is of the EDSAC I in June 1948, courtesy of the University of Cambridge....

Short for electromagnetic interference, EMI is a disturbance that occurs when two or more magnetic fields interact with one another. These fields can cause problems in any electric device with a circuit board. A good example of EMI would be to place an electric fan close to your monitor and the monitor flickers or jumps. Computer acronyms, Electromagnet, Electromagnetic Spectrum, Electronics terms, EMR (Electromagnetic radiation), Noise, RFI Related information Why do speakers get interference from phones and ham radios?...

Short for Group Policy Object, GPO is a computer or groups of computers on a network with a Group policy applied. A GPO can be edited using gpedit (accessed by running gpedit.msc) or, in Windows XP Professional SP1 and Windows Server 2003, through the GPMC (Group Policy Management Console) tool available here. Below is a picture of what the Group Policy Editor window may look like in Windows 10. How to open the Group Policy Editor To open the Group Policy Editor in Microsoft Windows, follow the steps below....

N/A may refer to any of the following: N/A is short for not available or non applicable. The N/A abbreviation is used to fill in a blank portion of a form, chart, or another document. NA is also an acronym sometimes used for North American. The Internet domain suffix .na is short for Namibia. Blank, Business terms, Computer acronyms, None

Non-composite memory modules are a newer 16-Mbit technology and can archive more memory capacities with fewer chips having a higher capacity than earlier memory chips. Composite, Memory terms Related information How to find how much RAM is installed on a computer. Memory (RAM) help and support.

An s-expression, also known as a sexpr or sexp, is a way to represent a nested list of data. It stands for “symbolic expression,” and it is commonly encountered in the Lisp programming language and variants of Lisp such as Scheme, Racket, and Clojure. These programming languages use s-expressions to represent the computer program, and the program’s data. For example, the simple mathematical expression “five times the sum of seven and three” can be written as a s-expression with prefix notation....

Short for single inline memory module, SIMM is a memory module developed by Wang laboratories in 1983. The SIMM circuit board that holds six to nine memory chips per board, the ninth chip usually an error checking chip (parity or non parity). The SIMM was used with computers using a 486, early Intel Pentium, and compatible processors. However, because the Pentium is 64-bit and a SIMM is only 32-bits wide, they must be installed two at a time to work properly....

The term social audio or voice-based social media describes a social networking service where members interact using their voices instead of text. On these platforms, users can record themselves describing a story, recent events, or a trending topic. These platforms also allow their members to host rooms where everyone participating can talk to others or listen to others talking. Examples of social audio platforms Below are examples of social audio platforms and other services with voice-based services....

Unlock may refer to any of the following: The process of enabling access to something previously inaccessible. For example, a user can unlock a document by entering a password, allowing the user to view or edit it. To change a formerly set state. For example, if caps lock is disabled, you can unlock and enable it by pressing the caps lock key. Something that is locked but has no password can often be unlocked by moving the mouse cursor or by pressing the Esc key....

On a computer, the term untitled describes anything without a title. For example, when creating a new document, it may display a title of untitled document to indicate the document is not saved. Once the file is saved and given a new name, the “untitled” placeholder is replaced by the file name. Software terms, Title, Word processor Related information How to save a document. Why am I unable to save a file on my computer?...

WAV is a file format and file extension ending with .wav that was created by Microsoft and IBM and widely introduced with the release of Microsoft Windows 95. WAV files were an early way of playing audio files on the computer that was replaced with MP3 and WMV files. Sound terms, Wave To play WAV files, use a media player, like Windows Media Player. Related information How to cut or otherwise edit an MP3 or other audio file....

Wi-Fi is a wireless network that utilizes one of the IEEE 802.11 wireless standards to achieve a wireless connection to a network. A home wireless network uses a wireless access point or router to broadcast a signal using WAP or WEP encryption to send and receive signals from wireless devices on the network. Wireless adapters If the desktop computer or laptop does not have wireless built-in, an adapter is required to connect to the wireless network....