Power Supply Problems

Power Supply ProblemsThe power supply convert’s your regular household current into low DC voltage used by the computer. When this component fails, there is simply no activity going on with your computer. Remember to do the easy troubleshooting first. Inspect the Power Supply for any damage. Double-Check all connections.

Learning how to check your power supply and how to replace it when needed can be a life saver if you’re a computer buff or in business with the trusted PC. Don’t take for granted the simple pleasure of turning on your PC and everything works just fine.

Here are some signs that could indicate when your power supply is going bad or just dies on you;

No power to the computer

Here you must first check the wall outlet for power by connecting another device such as a radio or lamp to be sure power is present. If the computer is connected through a surge protector, check it as well.

If the wall out has power, check the power cable going to the PC to see if AC voltage is making its way to the system unit. Do this with the use of a multimeter.

If there is power, you will have to open the PC and check for power from the power supply to the motherboard.

When using a multimeter to check voltage, be sure you have a good ground for the black lead of the multimeter.

Re-booting problems

One main problem you may face with an ailing Power Supply is that it may re-boot the computer without any warning. All information is lost and it seems as though this happens at the worst possible time.

Booting errors when the computer first start’s up is another indicator of this component going on the blink.

Power distribution problems

When the power supply begins to fail, you may receive power at one device and not another. For example, the Hard Drive may receive power but the CDROM Drive has nothing at all.

Another headache with would cause re-booting is the intermittent power going to the drives or the motherboard itself. Follow the steps below to check your power supply should you experience some of the above problems.

Checking the power supply

If the wall outlet and the power cord are good, make sure the connection at the motherboard is secure. Then you may have to face the fact that the power supply itself is bad. If you have a Multimeter you can test the power supply output before purchasing a new one. Simply follow these steps.

Turn off the PC, but do not unplug it, open the system unit. Set the multimeter to read DC volts in the next range higher than 12 volts. Locate a power connector similair to the hard drive, or cdrom drive connector that is unused and turn on the PC.

You can also unplug a drive connector and use it as well. Turn on the PC and insert the BLACK probe into the power connector on one of the BLACK wires. Touch the RED probe to the YELLOW wire on the power connector.

The multimeter reading should be +12 volts. Now touch the RED probe to the RED wire and the reading should be +5 volts. If no readings or different readings occurred, you’ll have to replace the power supply. If the readings were correct, you should check the P8 or P9 connectors at the motherboard. These connectors may also be named P4 and P5. To check these connectors, perform the following. . .

Insert the BLACK probe into P8 at one of the BLACK wires. Insert the RED probe into the P8 connector at the RED wire. The reading on the multimeter should be +5 volts

Check the power going to the Motherboard connections by inserting the RED probe into P8 at the YELLOW wire and you should get +12 volts. Leave the BLACK wire touching the black wire at the P8 connector. Check the BLUE wire and the reading should be a -12 volts.

Now move the BLACK probe to the BLACK wire on the P9 connector. Test the WHITE wire by inserting the RED probe and the reading should be -5 volts. Check the RED wires on the P9 connector and you should get +5 volts on each red wire. You won’t get exactly 5 or 12 volts but the readings will be very close, such as 5.02 volts.

If the Power Supply is a couple of volts off, in either direction, such as when the RED wire should be reading -5 volts but it reads -8 volts, or if there are no readings, replace the power supply.

DO NOT remove the power supply from the system unit case when performing these tests. DO NOT perform these tests if you do not feel comfortable or do not know what you’re doing. Be sure to remove any and all electrical static build-up from your clothes and body BEFORE touching any parts inside the system unit. And NEVER open the power supply case for any reason, since high voltage may be present.

Few Tips to Protect Your Laptop from Theft

Protecting Your Laptop from TheftThe following is a list of tips to help safeguard your laptop while traveling or conducting business.

Never leave your laptop unattended. Keep your laptop in your physical possession at all times and pay particular attention at the following locations: airports, hotels, car rental agencies, offices, restaurants, college campuses, restrooms, payphones, libraries, bars, hospitals, conferences centers, train stations and bus terminals.

Record your laptop’s serial number, make and model information in your purse or wallet so if your computer is stolen, the information will be readily available when you file a police report.

Disguise your carrying case. By carrying your laptop in a case designed specifically for computers, you alert thieves to the fact that you are carrying something valuable. Instead, consider carrying your laptop in an ordinary piece of luggage, satchel, briefcase or other inconspicuous bag.

Lock it up! Use computer- locking cables to secure your laptop to a desk or table.

Etch, engrave or permanently mark your computer with your name and phone number. You might also consider placing several of your business cards inside carrying case pockets.

Cary your laptop when you are on a trip. Never place a computer in checked luggage.

Identify your carrying case in some unusual way. Brightly colored tape, yarn or tags will help you to locate your bag in the event it comes up missing. When traveling, you might also consider affixing something brightly colored to your actual laptop ( in light of new security measures at airports, travelers are required to remove their laptops from their cases at security checkpoints).

Put it in the trunk. If your laptop must be left in your car, store it in the trunk of the vehicle prior to arriving at the final destination.

Regularly back up information. Make sure you store this information separately in case your computer is stolen.

Report it stolen as soon as possible. In the event that your laptop is lost or stolen, make sure you report it missing to your employer and local authorities as soon as possible. This will help to speed up the recovery process, if the authorities find your laptop or catch the thief.

Computer Forensics to Help Solving a Crime

Computer ForensicsComputer Forensics is the scientific study of computers or computer related data in relation to an investigation by a law enforcement agency for use in a court of law. While this technology may be as old as computers themselves, the advances in technology are constantly revising the science of computer forensics.

In the technological old days, computer forensics was mostly related to data dumps, printing out every keystroke that had been logged on a computer in a series of eight digits, all of them zeroes and ones. Literally cases of paper would be used for the printing of the materials. Systems analysts would then have to convert all of the data into hex and then translate the value into whatever the actual keystroke was.

In this way, it was possible to go over all of the data and figure out at what point the computer and the corresponding program crashed. Like computers and technology, Computer forensics has evolved by leaps and bounds since those days of old.

While all computer language still ultimately boils down to ones and zeroes or binary and then hex, the means by which programs are created, run and utilized has changed drastically. Computer forensics has done well to keep up with the task at hand. Now hard drives can be wiped clean. However, without an unconditional format (and in rare cases, even with the unconditional switch) the data can still be retrieved.

It takes an expert in computer forensics however. It takes someone who is familiar with the technology of the computer and the science of computer forensics to reconstruct all of the data that has been wiped off of the hard drive.

Computer forensics can be used to track emails, instant messaging and just about any other form of computer related communications. This can be necessary, especially in the world today. Computer forensics experts have even advanced the technology to the point that they can track data real time, or while it is actually being sent and received.

This is a mind-numbing task when you think about the billions of communications going on around the globe at any given time, but the science of computer forensics is constantly advancing every bit as quickly or sometimes even faster than the technology they are responsible for investigating.

Computer forensics is an interesting aspect of technology that is often overlooked. Computer forensics has been used to solve many crimes and should be considered a viable tool in many ways. The study of computer forensics is constantly growing along with technology.

Save on Printer Ink and Toner Cartridges Cost

Save on Printer Ink and Toner CartridgesAre you getting tired of the high cost of printing? You’re not alone. Many consumers are up in arms. For example, they believe paying $22 per ounce for printer ink and $150 to $300 (or more) for a toner cartridge is way too much.

Most of the major printer manufacturers have adopted the same marketing model as the razor blade, and cell phone industry. Simply stated, they sell you the printer for cost or less in order to sell you printer ink and toner cartridges at huge markups. In many instances, they charge seven to ten times what it costs to manufacture these products.

In addition, these major companies spend thousands of dollars trying to convince you to purchase only their products. They strongly criticize printer ink and toner cartridges offered by third party companies. However, did you know that many of these major companies are now selling their own recycled cartridges and you’re still paying full retail price for them! As someone once said, to get a real education, read the fine print on the label.

With the advent of online marketing, consumer have more choices than ever. There are a large number of reputable companies that sell printer ink and toner cartridges at significant savings. It is very common to save 50-85% when purchasing your printer supplies. In addition to substantial savings, you’ll get a money back guarantee and your order is normally shipped the same day.

Ok, here’s several ways to save on printer ink and toner cartridges:

Purchase a compatible inkjet cartridge. These are cartridges made from new parts and manufactured to meet or exceed the OEM specifications for you exact printer.

Purchase a remanufactured inkjet cartridge. Third party companies collect empty printer ink cartridges. They refill them with ink and test them vigorously to make sure you get exactly the quality and quantity you expect from your inkjet cartridge.

Purchase an ink refill kit. You’ll get step-by-step instructions, the tools and printer ink you need to refill your ink cartridge in just a few minutes. On the average, you can refill an inkjet cartridge ten times.

Your inkjet cartridge will eventually wear out. Instead of purchasing a brand name cartridge, purchase a compatible or remanufactured cartridge. Then, when compatible cartridge is empty, refill it with printer ink just as you did your original.

When you’re printing, always use draft mode until you’re ready for your final print.

Whenever possible, select black and white print. If you’re final product is to be in color, your draft can be done in black and white until you’ve double-checked everything. Then, print your final copies in color.

Purchase a compatible toner cartridge. Third party companies make these toner cartridges from brand new parts. They are manufactured to be equal to or better than your original toner cartridge.

Purchase a remanufactured cartridge. Many companies collect empty toner cartridges. They empty any toner waste and then refill the cartridge. They quality check the drum and other parts of the cartridge to insure maximum performance for the consumer.

Purchase a toner refill kit. These kits include the tools and instructions necessary to refill your own toner cartridge. On the average, you can refill a toner cartridge about three times.

When you toner cartridge is not producing the quality of print you expect, check to see if you can replace the drum, instead of the entire cartridge. This will keep money in your pocket.

Purchase multiple ink and toner cartridges if you can. You will save substantially over the already discounted cost, plus you will probably get Free shipping.

By ordering your printer ink, toner or ink cartridge online, you’ll experience the best service, the best warranty, and the best products available, for all your printing needs.