For your computer to boot, it needs instructions. In a functioning system, the boot instructions are on the computer’s hard drive. If something goes wrong the typical backup boot system is on a CD that you can instruct your computer to boot from. However if you don’t have a functioning CD drive, then you have to resort to other boot options. Tips Writer Bio

The PHP file extension is typically used by web designers in the creation of interactive web sites. PHP scripts can process online forms, access database information, and retrieve the proper day and time. PHP files are generally “under-the-hood” programming, in that the web server takes the code and converts it into the HTML that people see on their screen. Several ways exist to access PHP programming. Writer Bio

The RadioShack 3-in-one remote control will allow you to operate your television, VCR/DVD player and satellite/cable box without the need for separate devices. The RadioShack 3-in-one remote control also serves as a suitable replacement if the original remote control for your television, DVD player/VCR, cable/satellite box becomes defective or lost. In order to use your RadioShack 3-in-one remote control with your home entertainment equipment, you will need to properly program the device using a few simple steps....

Universal remote controls can be a capable replacement for lost or broken remotes and can be a good alternative to juggling the various remotes that control the handful of devices and components that comprise a typical home entertainment system. Nexxtech remotes control a varying number of devices, depending on the particular model, and their remotes are designed to be easy to program, whether you are looking to use it with a TV, VCR, DVD player or cable/satellite receiver box....

If your graphics card needs an jolt, your best option for increasing the speed is overclocking. Overclocking is a process whereby the graphics card is modified so as to perform at a higher speed than intended. Overclocking a graphics card is accomplished using software applications that can increase the clock rate. By increasing the clock rate, the graphics card is able to handle more complex graphics. Most applications offer easy-to-configure wizards for overclocking your graphics card and can help you determine what clock rate is best for your graphics card....

Most cable programming comes with a television receiver box. This receiver box obtains higher-end programming and unscrambles it. However, if you have the basic cable package there is no need for the cable receiver. Hooking up the receiver to your television is similar to attaching most other audio/video devices to the TV and only takes a few moments to complete. Writer Bio

You can fix fading colors that appear on your computer screen in the same way that you would fix shadowing, streaking or off-center pictures that appear on your computer–by using your computer’s auto-adjustment feature. While the names and functions of buttons on a computer may vary from one to the next, the general process you follow to fix fading color on a computer screen remains the same.

Using printers with Mac OS X is generally very easy. In many cases the operating system does not even require printer drivers to be installed, and it usually does a good job of monitoring a printer’s supply levels such as ink and paper. From time to time, however, the operating system may have incorrect information about supplies that can prevent you from printing correctly. In these situations you will often need to reset the printing system in order for the software to recognize supply levels correctly....

While older TiVo’s can be hooked up with Comcast cable service for limited functionality, high-definition (HD) TiVo digital video recorders (DVRs) are fully compatible with Comcast cable service. Customers who want to use a TiVo with Comcast service can do so in two ways. They can buy a TiVo HD or TiVo Premiere and have Comcast install a CableCARD into the TiVo box, or they can sign up for a Comcast TiVo box that comes as part of Comcast’s Triple Play package....

There’s good reason why elementary, junior high and high school administrators request that Internet restrictions be placed on school computers. This ensures that students do not access inappropriate – even unsafe – websites. For in-school labs that use computers, these restrictions also help to keep students from becoming distracted by social networking sites such as Facebook or Twitter. However, restrictions can also limit students from accessing useful websites. There are several proxy sites that allow students to bypass these restrictions and access the websites they need....

External hard disk drives are a convenient, albeit somewhat expensive, way to store important files or back up files from the computer. These drives not only have the ability to back up the entire system, but the operating system as well. One of the huge advantages of external hard disk drives is safe storage. You can send your files to the drive on the computer, then physically store the drive in a protected area such as a safe or closet to avoid damage....

If you have a T-Mobile cell phone, you can use it with a T-Mobile prepaid SIM card even if you do not have a T-Mobile service contract. Simply purchase a SIM card, activate it and place it in your T-Mobile cell phone. Prepaid SIM cards are attached to credit card-sized plastic holders referred to as activation cards or SIM holders. You can activate a T-Mobile prepaid SIM card online using the information on the SIM holder along with the information printed on the cell phone....

If you’re using Webmin to control your and administrate your Unix-based server, then you’ll eventually need to know how to add new users. Webmin is primarily developed for administrating Web-based servers and has a number of Web applications pre-installed to its operation. If you’re connected to Webmin via your Terminal, then you’ll need to learn how to add users using the command line. This involves invoking typical Unix commands and then associating that user account with Webmin....

The Magellan RoadMate 1200 is a mid-size GPS device. Depending on when you bought your RoadMate navigation system, it could have any of the device’s 39 software upgrades. It’s always best to have the most current version so your journeys aren’t vexed by any dated information. Upgrading your device will take a few minutes to receive all the updated 2010 data you’ll need to stay pointed in the right direction....

One of the powerful features of the programs in the Microsoft Office suite is their collaborative capability. Because of this, you can easily create something in one program and export it to another. One example of this is to use the spreadsheet program Excel to create shapes to be used in Visio. All you have to do is create your spreadsheet, enter in your data in Excel and then use the Organization Chart Wizard in Visio to automatically create the shapes based on the data in the Excel spreadsheet....

Radio frequency interference (RFI) is a common phenomenon in urban areas where wireless is widespread. It is neither easy to avoid or difficult to find. Interference stems from an outside source that is external to the signal path and creates unwanted artifacts in the signal. Radio Frequnecy (RF) is part of that electromagnetic spectrum that is above audio (roughly 20 KHz) and below infrared (roughly 30 THz). In audio systems, RFI decreases the quality of signal by remodifying the audio to undesired noises....

Sometimes there are things you want to tell your friends or colleagues that you don’t want broadcast to just anyone. If you have held back from posting anything on Facebook for fear of it being shared with the world, there is hope. Facebook continues to improve its security and control features, allowing a greater degree of confidence when posting on Facebook. Writer Bio

When calling a number from a Verizon Wireless cell phone your number, and in some cases, your name appears on the recipient’s cell phone screen or caller id box. To maintain privacy or prevent the person you are calling from seeing your telephone number, you can use Verizon’s calling services to temporarily block your number during a single call, or set the service to hide your number for every outgoing call....

Networks can come in all shapes and sizes, but the two basic categories are peer-to-peer networks and client-server networks. Client-server networks are for over 15 users generally, and mostly used in small to large business environments. In a client-server network the client is the user’s computer, which can be either a desktop or laptop. The composition of the server varies depending on the network, but the basics will include a domain controller, DHCP, and DNS....

The measurement of arc seconds per pixel is used when taking pictures of the sky for astronomical purposes. An arc second is a unit of measurement of the sky, and is equal to 1/360th of 1 degree. To get accurate photographs that are of good quality, it’s important to find out how many arc seconds per pixel your camera equipment can record in. This measurement is easy to figure out, thanks to a simple formula....