PC Tutorials Online

The other day I purchased a Benq E2200HD monitor to replace my aging Benq 17" FP71E+. It actually died on me for no reason, hence me not posting any new content. I opened it up and found two power resistors on invertor board loose. I attempted to resolder the resistors but even after the repair, no joy. It will probably go on ebay for someone to use as parts.

As for the new Benq E200HD, is it any good? From my viewpoint, i quite like it. The screen is vibrant (had to turn the brightness down to 65) and running at 1920×1080, the detail is awesome. It also has a HDMI port, which at the moment, have my XBOX 360 attached to. 

Reading about the monitor, there were many people rating this as a great monitor while others did not like it so much. Part of the reason people didn't like it was because of the aspect ratio. The Benq E2200HD monitor has an aspect ratio of 16:9. This is perfect for movies and console gaming because you won't have any black bars on the display. However, most PC monitors have an aspect ratio of 16:10, which means the screen is slightly taller rather than longer. My opinion? I believe it has plenty of height, but that's because I orginated from a 17" LCD. And because most other 22" panels are 1650×1050, the 1080P resoultion of the Benq E2200HD makes up for this. 

If you are in the market for a 22" LCD monitor, I suggest if you can, go see this monitor in person. Your eyes won't lie. 

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If you’re like the many people that own a portable device such as a mobile phone, Mp3 player, or even a laptop, you’ll know how exposed your LCD screen is to being scratched. If by misfortune you have scratched your LCD screen, you just might be able to fix it. After reading various articles, people have said that they’ve had great success fixing their LCD screens by using an eraser.

How can using an eraser possibly fix an LCD Screen? Well, the logic is that by rubbing gently over the scratch with the eraser, the surrending area of the screen becomes level with scratch. Simple isn’t it?

My brother had great success using this method on his Sandisk 2GB Mp3 player; got rid of the minor scratches quite well. I would suggest to anyone who owns a portable device with an LCD screen get a LCD screen protector. DealExtreme offer great prices on their LCD screen protectors. So far I’ve purchased three from them and they work quite well on my Nokia phone. They ship internationally too.

Just note that if you have a major scratch or have done critical damage to your screen, this method may not be for you. Consider getting a professional to repair it or if possible, claim warranty.

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Ever wondered why your PC started making an annoying buzzing noise? Chances are it is probably because of a fan clogged up with dust. I turned on my PC recently to be welcomed by these symptoms above. The good news is that it is an easy thing to fix. If you’re not computer literate, or are not comfortable opening up your PC case, I suggest you get help from someone who does.

The first thing is to identify which fan is causing the noise. This can be a little bit tricky when you have five or so fans running. To identify the noise, I place my finger on the fan hub lightly to slow it down for a second and see if the noise lessens. If it does, you’ve found your problematic fan. The next thing to do is remove the fan from the chassis/PC. In my case it was the GPU. After pulling the gfx card out, here’s what it looked like:

I’ll also point out here that dust causes airflow blockage causing more heat to be captured rather than dispersed. I used a small paint brush to clean out the HSF (Heat Sink Fan) and the heat sink itself. The paint brush does a pretty good job. Never user a vacuum cleaner to clean pc components, the static created by the vacuum cleaner will fry the chipset, leaving you with nothing but paper-weight.While it maybe possible that the dust is causing the buzzing noise, most fans today use sleeve bearings, which are quieter than ball bearings, but do not last as long. So the buzzing noise could be that the bearings are worn out.

A good way to fix it is to apply some light machine oil to the fan. If you fan is in a heat sink, remove the fan by unscrewing the three screws and turn it over so that you can see the back sticker. Gently lift up the sticker so that you can see the fan motor (See picture 2). Apply a couple of drops of oil and replace the sticker. Spin the fan a couple of times with your fingers to lubricate the fan evenly.

Put everything back together and give your PC a whirl. You should now have successfully hushed your PC and improved cooling.

A couple of drops should do the trick!

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Many of us are confronted with buying expensive genuine ink from the big companies. There a lots and lots of 3rd party companies that make ink for leading manufactures at a fraction of the cost. Being so cheap, we are inclined to buy the cheaper ink. But what it leaves us with is the consequences of cheap ink.

In my experience, cheap ink can have a good short term, but a very bad long term effect. In the short term, we save money on ink cartridges but due the ink quality, print heads get clogged and damaged, thus leaving us to buy a new print head. On the other hand, you could buy genuine ink, which would give you lasting picture quality and better maintained print head but you cop the price of the ink cartridges.

The best solution to this is to buy a continuous ink supply system. Granted the supplier provides quality ink, it’s much cheaper than buying genuine ink and you don’t have the problem of broken and clogged print heads. So what is a CISS? The CISS is a self contained unit with its own cartridges fed by silicone tubing from a large ink reservoir which sits beside your printer. The system acts like a giant cartridge by feeding ink to the printer when required. Using a CISS system is an extremely cost effective way of printing and can save you upto 95% of printing costs.

RIHAC Digital Solutions provide CISS for most inkjet printers. If you tend use your printer a lot, I highly suggest you check them out. They ship internationally and offer fairly completive pricing. But what is most important is the ink quality. RIHAC don’t use cheap generic ink, they use Premium grade UV Micro filtered ink imported from USA, Germany and Japan.

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A lot of people today face the ever increasing power bill cost. Computers tend to add a considerable amount to the bill. But recently, computer hardware manufactures are coming around to the fact that more and more people are becoming environmental conscious. So this is a win/win situation for the end user; the power bill is reduced and in turn, less pollution is made for the environment.
If you’re building a new PC and want to reduce your power bill, consider the following points:

• Buy a power supply unit that is 80 plus certified. This means maximum efficiency is obtained when your pc is running with minimum power wastage. PSU manufacture Seasonic produces such excellent power supplies.
• Consider purchasing a case that has excellent natural airflow. The more freely air can be moved, the less need for more case fans. Antec have advanced chassis that are aimed for low airflow situations.
• Think about buying an energy efficient motherboard. Gigabyte have a lot to offer with their motherboards consisting of dynamic energy saving technologies, your PC will run much cooler and be more reliable.
• The processor you purchase will make a big difference on power usage. Both Intel and AMD have technologies to keep power down to a minimum but Intel has a better performance to price ratio and when you start moving up the line, AMD processors currently run hotter than Intel. You should also decide whether to buy either a dual core or a quad core. See Dual Or Quad? Which is Better?
• Consider buy a Western Digital hard disk, as Western Digital has produced a “Green Drive” which is a technology that reduces hard disk power consumption.

If you’re not planning on building a PC anytime soon and would like to reduce power consumption, try these ideas:

• If you’re running an AMD processor, enable Cool “n” Quiet in the BIOS as this will throttle the CPU.
• If you’re running an Intel processor, enable Intel SpeedStep Technology in the BIOS as this will throttle the CPU.
• Lower your monitor’s brightness setting.
• Shut off your monitor in between breaks.
• Don’t leave your computer on overnight.

By following the above points, you will see a reduction in power usage from your PC. What this means is the air will be cleaner and you’ll save money from your power bill. Nice.

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When you’re dealing with repairing PC’s at a hardware level, you must think logically to find the problem. This flow chart by Morris Rosenthat is very helpful when dealing with such problems. It lists all the main parts of a computer and gives suggestions to fix the problem. It’s worth having. Enjoy.

Download Boot Faliure Flow Chart

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RAM in PC’s today is extremely prone to damage and can render useless if the slightest damage is done. When there is a fault in hardware the hardware, the user must try and debug the problem. Memtest86 is a great utility to use to test memory.

Being a PC builder, I’ve repaired many PC’s and can tell you sometimes isolating problems isn’t such an easy task. If a memory stick is the problem, you could of course take one stick out and leave the other one in there and then vice versa. But if you only have one stick of RAM available, memtest86 can help you out. All you need is blank CD or Floppy disk. Memtest86 is a standalone program, so you do not need an operating system installed to use this program.

I could keep writing about it however everything you need to know is listed on the Memtest86 tech page. So if run into trouble with PC memory, use this program like you use your Swiss army knife.

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There have been many heated debates amongst many PC enthusiasts about which CPU in cores is better. Some say a dual core is better because the cores are clocked higher than a similar price quad. Others say quad is better because it has twice the amount of cores as a dual core. So which one is the better product?

Back when single core CPU’s dominated the market, they key to processing information quicker was determined by the FSB and maxing out the clock speed. Eventually, both Intel and AMD hit the limitation of single threaded processing. To make logical sense of why we have more than one core nowadays is because programs are making use of pipelining, a way of processing instructions faster. Instead of waiting for one thread to finish, pipelining allows the next thread to start once the first step in the machine cycles has been completed. See Diagram 1 for a visual understanding.

Diagram 1

Taking that diagram into account, imagine a dual core processing the above four instructions; it would need to complete the first two threads before it could start the next two. But if we use a quad core to process it, it could start all four threads at the same time.
Quad core is better then, right? In theory, yes, but only if programs are optimized for multi-threading, which at the moment there aren’t a lot. This is where a dual core tends to have an edge over a quad. It processes a thread at a faster rate just like the single core CPU’s did.
So if your gamer and need the best value/ performance ratio, the dual core is your winner because there aren’t many games that utilize four cores. However, if you’re a video editor, or use CAD or any other design/editing tool, chances are they have been optimized for pipelining, which Quad cores process well. But what if your some one that surfs the net, plays the occasional game and edits photos? This is where most people are at, and generally speaking, if you’re not a power user, a dual core should suffice. But if you’re running Adobe Photoshop, MSN messenger, have a web browser open and are maybe encoding a video file all at the same time, a quad core would be the best choice. Why? Because running four different programs at once would allow each core on the CPU to be utilized and not bring the computer speed to a crawl.

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