1. Make sure your speakers are on and plugged into power.

As I've said in other articles, nothing can run without power. Make sure your speakers are plugged into a power outlet and that the outlet itself is working.

2. Make sure your speaker wires are in the right place.

Basic Speakers may just have the one wire, but If you have anything other than the bare minimum, there's going to be 2, 3 or even 4. And if you don't plug the right wires into the corresponding plugs, your system won't work. The one that every system has is the plug for the main speakers and it's pretty universal that green corresponds to these, and therefore should go into the green jack. If there aren't matching colors, the speaker jack should have some sort of symbol depicting a speaker or headphones radiating sound, or something similar. If you have anything more than a two speaker system, for example a 5 speaker surround sound system, you will have more to deal with. The green will be for the front left and right speakers, but you will have two more wires that correspond to the front center speaker and the back left and back right speakers. On my Logitech system these are black and orange respectively. Now there is another jack for a microphone, which I have encountered as pink most of the time. But even without a color there should be a symbol depicting a microphone beside it.On a side note, most sound cards will have three plugs, one for the main speakers, another for the front center speaker, and one for a microphone. In order to have a surround sound computer system you usually need a higher end sound card that supports those extra back two. But don't worry if you have a big speaker set and don't have enough plugs for everything, the main speakers will still work, you'll just have to upgrade Cards to get the surround sound experience. Now if all else fails and your cords and plugs are the wrong colors and there aren't any symbols depicting which is which, a simple trial and error will eventually work, plug each wire into each plug, and one of them should eventually work.

3. Check windows volume control aren't turned down or muted.

I know I've done this a thousand times. Turned on some music, heard nothing, had a mini-panic attack about my speakers being broken, and then realizing that the sound was just muted. To start with, make sure your speakers themselves are turned on. Many speakers will have a button that turns them on when they're plugged in. They also may have a volume knob that you can turn to adjust the sound, make sure this isn't turned all the way down.Most applications that involve sound (for example windows media player or itunes) will have a built in volume control somewhere in the interface. These can look like a slider or meter that shows a speaker with sound waves coming out to show what it is. Make sure this is turned up and the mute box (if it has one) is unchecked. Now Windows has a master volume control that sits near the clock on the bottom right corner of the screen. If you double click the speaker icon, then the sliders will come up. Make sure they are all turned up to how loud you want them. Now if all this doesn't work, it could simply be your system is trying to play through the wrong device. If (in Vista) you right click your volume control and select "playback devices" from the list, you should open up a window that lets you change the device.

Or in XP, you can right click your volume control and go to "Adjust Audio Properties" and then go to the Audio tab.

Now if you have more than one device in this screen then select one, and click set default, and try your sound, and then the other, click set default, and try the sound. Click OK when you find the one that works.

4. Make sure your sound card drive is installed and working.

Now this step is a little bit more complex, though not awfully so. Sound cards have drivers that run them, so if there's no driver, then your sound card won't work. There sound be a driver CD that came with your computer with the right driver on it, so look for that and use the CD to install or re-install the driver. Failing that, most manufacturers will have the drivers to their products on their website so if you know the maker of your card you can simply go to the website and download it. Additionally if you know the model number of your card you can sometimes input that into Google or other search engine and it will take you to a site where you can download your driver. In order to find the model number of your card you have to look at the card and you have to take apart the computer to do so and I don't really recommend that unless you really know what you're doing.
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Technology is constantly changing the way we live and the world we live in. No where is this any more evident then in the world of computers. Computers are constantly evolving so that what was once the newest and greatest system becomes antiquated within just a year or two. Companies who have large amounts of software and hardware that they depend on day in and day out must continue to fork out large sums of money for new hardware and software just to stay ahead of or even with their competitors. However, if you are one of these companies (or work for one of them) then you can make money from your used IT assets. And here's how to sell your used hardware and software.

The first thing you need to do is find a company that specializes in buying companies' hardware and software that the company wants to get rid of. Then visit the company's web page and see what type of business they seem to be running. You can tell a lot by the appearance of a website.

While you're on the website you should be able to read about the company. Make sure they have a good reputation and also make sure they have references. If they don't have references then you probably want to move on and find another company.

Next you want to look at what the company will do for you when you sell your used hardware and software. Will they buy all or most of your hardware and software? Will they come and get it for you? This is very rare. But believe it or not, you might be able to get a company that will actually come to your place and pack everything up and then ship it to their own company. Then you'll have everything removed for you and you'll still get money in your pocket.

Finally, the only way you'll actually know how much money you'll get for selling your hardware and software is to actually go ahead and call the company. They should have a toll free number right on their website. So call them and find out exactly what they can do for you.

It's just that simple. That's how you can sell your used hardware and software. Then you can make money off your IT assets that you aren't even using anymore and you can reinvest that money back into newer and better technology.

If you're reading this article, you have had or currently are in the need of computer repair service. With the prevalence of computers and our dependency to them, chances are most of you have had the unfortunate computer repair issues that required a professional computer repair technician's experience to fix.

Whether you are a end-consumer trying to get on the internet or having trouble receiving emails or a small business sorting your way out of an accounting software nightmare or needing to acquire a Microsoft small business server, professional help is only a few clicks away.

The biggest hurdle when sorting through the multitude of computer repair technicians who advertise through their website online or in your local yellow pages is to find a firm staffed with certified computer technicians. In addition, you want to make sure that the firm is staffed with professionals that have a few years of troubleshooting computer and networking issues under their belt. Often, the desire to cut in on experience and get "Joe from next door" to fix your personal computer can backfire and your recourses are limited, unless you're dealing with a certified, trained and established firm.

According to a recent article "the unfortunate situation that is prevalent in the computer repair industry is that the good service firms end up fixing the other firms bad work". It is really important to select a firm specializing in a broad range of small business computer networking services to make sure that you issues are adequately covered. And once the customer understands that she is dealing with a heavily certified, personal and reliable business, most customers will become happy.

Top notch businesses services such as described above are not unique yet it is the personal touch that becomes a critical factor in the customer's loaded list of requirements. Since every computer configuration is unique, customers are looking to someone that is going to dig beyond the surface and ensure long term results. Right there at the same level in that list and no less significant is cost.

Customers are jaded with spending hundreds of dollars and weeks of downtime with big box store computer repair support inexperienced geeks. If the Computer repair technician you are speaking to cannot give you an estimate of the costs, a reasonable hourly rate and more importantly, assurance that your system will be repaired promptly, run away. In addition, if your request embodies several computer or networking services which will last more than three or four hours, ask for a "project" discounted price. After all, everything is negotiable, even computer repair services.

The computer repair service market is primed for companies that put the customer first and techno-gobbledygook second.

Finding a reputable and affordable computer service is not brain surgery. You can go to Google and type: "computer repair services" with your town name and state. Check the website results and look for companies that provide certified (check for: Computer Technology Industry Industry A+, Microsoft Certified Professional or even better Microsoft Certified Systems Engineer and Microsoft Certified Trainer)online computer repair services, fair hourly market rates and give them a call. Often, a personal conversation can tell you much about who you will want to deal with.

Do you own a Windows-based computer? If so, have you realized that there has been a decline in the performance of your computer ever since the first day you purchased it? There are times it may just hang on you or at other times, it may seem as if it is processing extremely slowly. However, instead of buying a new computer you should first try to figure out if you can preserve your current one. Below are some quick fixes to help you diagnose the problem with your computer.

#1 Run anti-virus software

Viruses are extremely irritating as they are often created by people with nothing better to do other than to try to hurt other people's computers. Viruses can be rather deadly as it name sounds, it can cause your computer to slow down and even erase off precious data! It is therefore essential to have a good anti-virus software to prevent such a fate from happening to you. You can easily find one through a web search and compare the different kinds of software available.

#2 Run a defragment routine

This sounds very technical to the average Joe who does not know much about computers but it actually is very simple to carry out. All it means is to properly arrange the data in your computer more efficiently. You can use the search function on your computer to find the program used for de-fragmentation and follow the cues to start de-fragmenting your computer. The process is free however it may take quite some time, so do plan ahead of what else you want to do.

#3 Clean your hard drive

Another method is to clean up your hard drive. A hard drive with too much unnecessary stuff can eventually slow down your computer. Do a search for disk cleanup and start getting rid or those files that you do not need and clear up your hard drive today. Chances are that you will have a much better performance from your computer after that.

#4: Clean your registry

Every computer has a registry that keeps the crucial information about who uses the computer and the applications that can access your computer. However, with time, the registry becomes rife with errors and plagued with false entries. Search the web for a good registry cleaner, moreover it is rather cheap and work great and can help boost the performance of your computer.

These solutions will most probably just take less than an hour for you to complete but the results are phenomenal if the crux of the problem lies with what is mentioned above. Furthermore, the 'quick fixes' mentioned above are free of charge or at the most cost less than 50 dollars. As such, don't be too hasty in wanting to purchase a brand new computer when your old one starts to act a tad funny. Give these tips a try first before spending big bucks on getting a new computer or you may just regret the hole that you have burnt in your own pocket.
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So, you have a brand new, shiny laptop your parents gave you for college. You have already installed all the software you need for writing papers, surfing the net, listening to your MP3s, etc. But you'd like to add that little something that will identify your laptop from all the others as soon as you turn it on. The most effective way is to place a Desktop Wallpaper.

In choosing a desktop wallpaper for your computer, keep in mind the following:

1. It should be an image you would like to see everyday.

2. Someone else might see it (parents, classmates, etc.) so keep it strictly GP.

3. It shouldn't be too big a file otherwise it will make your computer's loading time slower.

4. Choose an image that can stand to be blown up to 800x600 pixels or bigger. Low resolution images may not look good.

If you want to create a one-of-a-kind, original desktop wallpaper for your computer, here are some tips:

1. Start with a high resolution picture or image 700 pixels high.

2. Avoid screen captures from videos that are no DVD quality. Enlarging low resolution pictures is not a good idea as image degradation is noticeable.

3. Try getting free images from Media Miner and Google Image Search.

4. If your image has artifacts (small uneven squares of color) try cleaning them off first. If you can get a good clean image, better.

5. Choose colors that go well together. A desktop wallpaper is really a work of art and should be treated as such.

6. Do not overly compress your image when saving it. A 1024x768 pixel image is generally 100kb.

7. Be prepared to spend a lot of time creating your wallpaper. If you know how to use Photoshop, experiment with various filters and effects.

8. The purpose of desktop wallpapers is to not only to beautify your desktop, it is also a reflection of your personality. A simple, clean background reflects a well organized mind.

You have finished making your image and you now want to know how to place it on your desktop. Here are some simple steps you can follow;

Step 1:

Find a large version of a photo you wish to use. TIP: Download or take a photo at the highest resolution available.

Step 2:

TIP: If you have Windows Vista, its super easy. Just right click the image file and pick PREVIEW. This is the process we will use here.

Step 3:

From Vista's gallery window, Click FIX and then CROP

Step 4:

Set the proportion drop-down list to 16x9 for your widescreen monitor. Now drag the stretch the box to make the image look nice. Click Apply.

Step 5:

Here's your final image. Save it to "My Pictures" as a .jpg.

Step 6:

Right-click your open desktop and click Personalize

Step 7:

Click Desktop background

Step 8:

Pick your image, pick the fill or stretch option and click OK.

There are many sites on the net that offer free desktop wallpapers. The choices are virtually endless. You just need to download and install.

Many software firms have built up their businesses solely on the back of helping consumers remove virus from their computer's, specializing in the protection, prevention and cure of all manor of computer based afflictions. Still, the underground of malicious and mischievous programmers and hackers will always be finding ways around the securities imposed by modern anti virus software, and thus there are always vulnerabilities that some clever person can take advantage of.

Not only is it imperative to think about means to prevent any sort of computer infection, it is also wise to look into different ways to get rid of a stubborn and hard to remove virus from your system. Some virus have been specifically designed to work their way around the most popular computer security suites, and an infection from such a virus would render your anti virus software useless. When this happens, all too often the infection is left unchecked until the damage is already done. This is a primary reason why you should always keep your anti virus database updated, so you wont be left so vulnerable to newer threats.

If you do happen to find yourself with a hard to remove virus that your software cannot deal with, then it is time to try and manually remove it. Often the hardest part of the diagnosis and repair is to identify the actual virus. If your lucky, your AV software will find it, but it may not know how to remove this stubborn virus. If you're unlucky, you could be infected with a virus that your AV doesn't even recognize, although most modern anti virus bundles can identify suspicious files as well as definite infections.

Manual virus removal isn't always as hard as it may sound. Usually you'll have at least one suspicious file picked up by your anti virus program, and this is the starting point. The best anti virus software's will usually identify and mark the files that it cannot dispose of, and then allow you to log into your windows system via safe mode to delete the files permanently. Manual removal can be harder, obviously, but with a good program to guide you along the way often the hardest part is already done for you.

Sometimes you will be required to identify associated files that your anti virus didn't discover. As long as you have a good software though, even this isn't too difficult. Browsing through the system folder with the display settings enabled to show information lets you find the dates any files first appeared on your PC. If you have found one stubborn file, but your AV cannot find the rest of the associated files, the date is a good marker.

In the absolute worst of cases a virus may have attached itself to several important Windows system files. Unfortunately if you happen to have a severe case of spyware, adware or malicious virus on your PC it may be necessary to reformat your harddrive and reinstall windows. However, this is the worst case scenario, and usually only happens to those who have taken no precautions and allowed infections to amass.

When it comes to computer infections, even with the most hard to remove virus, the process for removal is generally similar. Depending on the quality of your anti virus software will usually determine the amount of work involved on your behalf in the diagnosis and repair of any infections.
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Scanners have revolutionised the computer age. They offer an ultimate solution for preserving document papers, souvenirs, etc. in digital format. But, about 6 -7 ago, it was a luxury item. Not so anymore. Just like most other computer products this one also had prices that started off with a bang but are now nominal.

Scanners have some important characteristics that cannot be compromised with. To begin with, it is the optical resolution. This is nothing but the number of dots per inch or dpi are obviously higher the dpi - better the image quality. The minimum should be 1200 dpi and this should be that of optical resolution and not interpolated resolution as the latter can be achieved by using relevant software. The next one would be the colour depth. This is also called as bit depth and refers to the amount of information captured in a single pixel and is proportional to colour differences it can determine. A 24-bit colour depth is ideal for moderate range scan while transparencies may demand more bit depth.

Although not very significant, it is good to pay attention to the sensor in the scanner. The technology used is CCD (charge coupled device), the same one used in digital cameras. However, a new type called CIS (contact image sensor) has just arrived. Though it consumes less power, it is up to the mark of CCD. The unit needs to compatible with USB 2.0 interface. Scanners are accompanied by their own brand basic software; however, some include third party software like photo manipulation and the like. A transparency adapter is required for scanning transparencies or negatives. Popular models available in the market suit a common home user, unless you are looking for high end operations. Some of the prominent brands are Agfa, Canon, Epson, HP, MicroTek etc.

There are different types available - Flatbed, Sheetfed, Business card, Drum, Transparency or Slide or Film, Handheld and Portable. Their functions go by their name. Drum scanners are used by printing industry professionals as it produces high-resolution scans. For this purpose, neither CCDs no CISs are used in them. They use PMT (photomultiplier) that captures the three basic colours (RBG - red., blue and green) separately. Lastly, regular users should look for scanners that scan with speed; on the other hand, the USB connection also influences the speed of the scan process.