Com2u Computer Home Service

MAC Defender antivirus app is a scam

May 23, 2011
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Mac Defender Virus

Mac Defender Malware hits the Mac

Mac computers havent got viruses like PCs, which has been a source of pride
for Apple’s many followers.

However, that’s all changed as a piece of malware called Mac Defender is
buzzing around the web, pretending to be antivirus software and offering to
clean up your Mac. Naturally, with this being malware, it actually doesn’t do
your computer much good and instead, is after is your money.

The Mac Defender software cons Mac owners into handing over their credit
card details. What happens is that, once it’s on your Mac, you’ll suddenly get
flooded with porn sites opening up on your computer, making you think you’ve
got a virus (not much use if you tend to look at nothing but porn in the first

Then, here’s the sneaky part, Mac Defender asks you to pay for a
subscription and lo! The porn vanishes from your Mac! Alas, it has your credit
card details and baddies can do as they wish with it.

So look out for that, and its variants called Mac Security and Mac

Mercifully, you should be able to remove these threats pretty easily by
simply removing it by deleting the app from the Applications folder. Any
problems there and you can open up Activity Monitor, click on Mac Defender and choose
the Quit Process button before deleting the app.


Posted in Mac

Com2U Retail / Service Centre in  Pattaya now open!

May 23, 2011
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pattaya computer service

Com2U Pattaya soi ume

The rumours are true, we’re opening our retail / service centre in Pattaya. After having performed over 1800 service calls in Bangkok in 2011 so far we’re looking to expand our operations in Pattaya. We’re expecting demand to be high in due to the large number of expatriates and expat retirees, who frequently need help with their computer. Our new service centre is conveniently located on soi ume (right next to Carrefour) We have a large bright retail area where you can interact with our tech staff. For Pattaya we also have a genius bar and we are selling reconditioned computers with warrantee from as little as B2500!

How to clean your laptop

November 18, 2010
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How to clean your laptop


At com2u computer home service we can’t point out enough how often people bring us
their laptops and tell us it’s broken when the only problem is dust. You
should dust out your laptop at least once a year, ideally more; otherwise your
laptop can easily overheat. Luckily most laptops have sensors which detect the
overheating and shut them down but this can be confusing as the laptop will
work fine until the temperature reaches a certain level.


Get the Dust out:

Dust and hair (pets etc.) can fill your laptop’s vents, causing the machine to
overheat. Pick your notebook up and check the vents to see if dust is
covering the vents. Brush or blow it out with compressed air (you can buy this
in cans).

More adventurous types can unscrew the bottom of their notebook and give it a more
thorough cleaning. Also if you remove the keyboard in most models you can easily
clean the fan and heat sink as well. Just be careful, power off your laptop and
remove the battery before you do all this.

Clean the screen:


Don’t use anything with alcohol, ammonia or solvents. You can use distilled water and
a clean cloth to clean it. If your machine is really dirty, try a mixture of 50
precent distilled water and 50 precent white vinegar. Start by turning your
notebook off and remove the battery. Then moisten a clean cloth and wipe it
gently across the screen. Do not spay liquid directly onto the screen. Do not
put too much pressure or you might crack the screen.


Tidy the keyboard and touchpad:

Hold the laptop upside down and give it a gentle shake to help dislodge any gunk.
You’ll need a can of compressed air to blow out dust and crud that has built up
over the year. Next, get some cotton swabs, dip them in same cleaning solution
used for the screen and wipe the side of the keys. Make sure it’s not too wet
because you don’t want liquid to drip on the keyboard.


Let com2u Do it all for you

Com2U computer home service has years of experience in cleaning laptops so if you don’t
have the time or if the cleaning process seems a bit daunting the n please give
us a call on our hotline and arrange a service visit


Call us now on 0800-300-400

Or checkout our website for more details:

Top 10 Things to Do with a New Windows 7 System

September 12, 2010
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Whether you’ve just bought a new PC, upgraded to Windows 7, or reinstalled your OS, a just-installed system is a great opportunity to make some helpful changes and fixes. Here are the things we recommend anyone tackle on a minty fresh Windows.

Posted in Com2u, windows7

Anti Virus Software for windows 7

August 29, 2010
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Just got your new PC loaded with windows 7 ?

Giving the old PC a rebirth by throwing Vista into the trash where it belongs ?

Now comes time for the all essential anti virus protection, most of the familiar names are still around with existing versions or upgrades that are windows 7 compatible or enhanced, but it would be a real shame to slow down the windows 7 experience with crappy anti virus software. This is where Microsoft comes in with a new product which seems to have very little publicity.

Microsoft Security Essentials

Microsoft Security Essentials provides real-time protection for your home PC that guards against viruses, spyware, and other malicious software.
Microsoft Security Essentials is a free* download from Microsoft that is simple to install, easy to use, and always kept up to date so you can be assured your PC is protected by the latest technology. It’s easy to tell if your PC is secure — when you’re green, you’re good. It’s that simple.
Microsoft Security Essentials runs quietly and efficiently in the background so that you are free to use your Windows-based PC the way you want—without interruptions or long computer wait times.

We feel they probably dont advertise it too much as it really does a good job and its free, so the companies making anti virus software would be up in arms if everyone knew about this gem!

one quick note for any of you digital pirates out there : Microsoft Security Essentials requires a Genuine copy of windows (Vista or 7)

Which Version of Windows 7 is Right for me ?

August 29, 2010
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There are six editions of Windows 7, but only one you want

Posted in Com2u

Why is my Internet Slow? Part II:ADSL and The Last Mile

December 29, 2009
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To be fair this article has taken more than a week to appear, but we plead Christmas.

In our last article we talked about factors that can cause websites to load slowly, but the biggest reason internet access gets sluggish is between you and your telephone company.  In industry jargon it’s called The Last Mile, and it refers to the last mile of (usually) copper cable that connects your computer to the local telephone exchange. 

Telephone cabling hasn’t changed much in the last 100 years, meanwhile the connection from your exchange is now lightning-fast optical fibre, to pretty much anywhere in the world.  The cost of replacing all that copper in the ground is what keeps it there, and leaves us with few choices for broadband internet in the home.  Luckily we have ADSL.  Unluckily this technology comes with a lot of compromises.

ADSL stands for Asynchronous Digital Subscriber Line.  The Subscriber Line bit refers to your copper telephone cable.  Digital means, well, it’s a digital connection.  Asynchronous differentiates it from DSL or Synchronous DSL.  With plain DSL the amount of data you can upload is the same as the amount of data you can download, but with ADSL, the amount of data you can upload is usually much lower than the amount you can download.  For example, your line may be about to download 4Mbps (millions of bits per second), but will upload no more than 512Kbps or 1Mbps.

The reason Asynchronous connections are used is because you don’t need to upload much to surf the web, your computer requests web pages and those requests are very small compared to the size of the pages.

When you connect to the internet via ADSL, a couple of things are going on.  First up, when you plug in your ADSL modem (it’s actually not a ‘modem’ in the strict sense but the difference is only interesting to techies and pedants) and switch it on, it will try to establish a data connection to your local telephone exchange — to a piece of equipment called a DSLAM, short for Digital Subscriber Line Access Multiplexer.  This data connection is not yet an internet connection, it’s a DSL connection and when it is established the DSL indicator will light up on your modem to indicated that you can connect to the exchange.

What happens next is that you ‘connect’ to the internet.  What this means is that you send your username and password over the DSL connection to your ISP and they’ll check it against their (billing) records (usually using a RADIUS server, if you want to look that up).  If all is well they’ll pass on requests and let you download data through their internet gateway.  If not you’ll find yourself calling their support line.

The trouble comes in two phases.  Firstly, you can set up and pay for a ’10Mbps’ connection, but unless you’re close to the exchange and have a very clean phone connection, you’re never going to get anything like that.  You see, the published maximum rate for ADSL (like 10Mbps) is a theoretical maximum, which means it’s only achievable under laboratory conditions.  What actually happens is that speed drops the further you are from the exchange and, well, that twisted pair of copper cables was just never meant to carry too much data.  Every poor solder or bit of corrosion will lower the fidelity of the line and thus slow down your connection.

So, the first lesson is to work out what the maximum speed your local telephone line is and don’t pay for more than that.  That said, telephone companies will replace or repair particularly troublesome lines.  For any other problems, you can give us a call to fix your internet connection.

The next place where things get slow is at your ISP’s connection to the rest of the world.  But more on that, next week…

Filthy Computers

December 7, 2009
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Those of us who grew up in the 80s and 90s got used to thinking of computers as being high-tech, expensive and gleaming.

Computers are still high-tech but they’re not that expensive anymore and as the photos below show, far from clean machines.

Computers accumulate dust because they suck air from the room to cool their components.  Or, in this case, dog hair:

Because computers are warm, dry and don’t get opened up very often, some things make their homes in there.  Mostly cockroaches and the spiders that eat them:

If not blown out once in a while, dust can cause ventilation can fail:

Bangkok’s air tends to be heavy with dust and fines, due to the popularity of poorly maintained diesel engines and construction.  It’s usually not this bad though:

If you’re not brave enough to crack open your own PC, you can have one of our friendly and experienced technicians bring over a dust blower as part of a normal compuer checkup.

Posted in Com2u

Why is my Internet Slow?

November 20, 2009
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The first fact, of course, is that the internet isn’t fast enough. Any wait is too long for us impatient humans, but there are of course degrees of how slow is too slow.

Thailand’s ISPs are locked in an escalating arms-race to deliver the ‘fastest’ network speed, but what’s the real reason your YouTube video is staggering?  Well, it could be due to a number of reasons.

Your computer’s a wimp.
Web business managers don’t talk about web sites or web pages anymore, it’s about web applications, so the page you’re displaying may demanding more grunt to display than your computer’s willing to give, and as you keep open more windows or tabs this problem multiplies. Typically this problem arises on poorly designed sites (the people who made it probably have fast, shiny computers) on a machine that was old last year. Add to this the sad fact that web technologies value cross-platform compatibility over performance and it spells ‘Upgrade.’

Their computer’s a wimp.
If a site is being served by an under-classed machine or is particularly busy, you get what is called latency, which is the delay the server takes from receiving your request for a webpage or file, this can be as long as a few seconds and is pretty noticeable at your end. Latency also depends on the distance between you and the server, and a myriad of other factors that you need a physics degree to understand, but their server huffing and wheezing is the first one you’ll notice.

Network strangulation.
Now this is the bit that people are most familiar with, and where telecoms make their money. Be aware that if there’s a slow patch at any point in the route between you and the web server, that’s the choke point. This can happen at the server end, although these days it’s pretty unlikely, or in what telecoms engineers call ‘The Last Mile’ (from the exchange to your house), which is almost always the case. There is also the matter of the national internet gateways and the submarine cables that carry network traffic around the world. If you’ve ever been around when a ship’s anchor has severed one of these cables you’ll recall that internet traffic slows to a crawl when this happens. Yes, the internet was designed to be robust enough to survive a nuclear war, but can’t stand up to LOL Cats and chain-letter spam.

Speaking of submarine cables, it’s an important subject if you’re a net user here. Thailand is poorly cabled to the rest of the world (although this is changing) so, unless you’re hitting Thai websites, you’re sharing a spindly tube across the pacific with everybody else in the nation. What’s worse is that most of the Content Distribution Networks (‘CDN’s, provide copies of web content hosting in many locations around the world, reducing latency) don’t have a presence here. Why? Most Thais read websites in Thai, and they’re hosted here. There’s not a large international diaspora publishing stuff in Thai language internationally so most of the local traffic stays local. Also, telecoms networks charge by the byte and that has made international network capacity Baht expensive. This is changing as Thai telecoms sign peering agreements (traffic swaps) and new cable is laid.

But of course the thing that people are really interested in is how fast their home connection is. These days it’s almost always ADSL (short for Asynchronous Digital Subscriber Line, by the way), and it’s an oft-misunderstood technology. But to give it its due, I’m going to write a full article on it… Next week.

Posted in Com2u

Software System Cleanup

October 14, 2009
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There are lots of packages on the market that promise to clean up your system and boost performance, but over the years they’ve earned a fairly spotty reputation.

Generally speaking, Windows is going to run at it’s fastest when it is first installed – a ‘clean’ install. When you start installing software, extra services are added to the boot process, making the computer slower to start, and the registry gets bloated with entries, making the whole system sluggish. Uninstalling software can help, but poorly written software usually leaves behind files and registry entries and generally make the system ‘crufty‘.

Back in the 90s we were all told to defragment one’s hard drive when the system slowed down. That’s no longer the case. Modern hard drives are much faster and larger capacities mean they’re less likely to fragment. Modern file systems also discourage fragmentation and Vista or Windows 7 will automatically defrag your drive when you’re not using it. In short, don’t bother defragging more than once a year or so, and given the size of modern hard drives, put aside an afternoon.

Ideally you should scrub your hard drive and reinstall your Windows system every two years or so. It’s quite a job to backup your data, strip down the system and restore data (but if you like you can ask one of our technicians to reinstall windows), so there are lots of products out there to ‘boost your system’.

Computer industry news site the Register recently ran a comparison of five of these products, ranging from the venerable Ccleaner (which is donation-supported), to fancy-pants iolo System Mechanic, which markets for $39.95. They tested for improvement of boot-time and tested performance using Office and Photoshop using an old laptop running XP and a more up-to-date machine running vista. They also tested performance after a memory upgrade, from 512MB to 1.5GB for the XP machine and from 2GB to 4GB for the box running Vista.

For the machine running Windows XP, the normal boot time was an agonising 125.2 seconds. Of the various software solutions, iolo was the only one to show an improvement – by about 10 seconds. All the other optimisers actually increased boot time. To be fair, however, most of these packages give the option to turn off services and programs that automatically run when the machine boots, which would offer further speed advantages. That said, installing an extra gigabyte of RAM gave the best performance boost, by 12 seconds.

It was a very different story in the case of the machine running Vista. In that case, upgrading the RAM from 2GB to 4GB only resulted in a four-second improvement (from 209s to 205s), which suggests that 2GB is enough to get Vista booted, or at least a lack of RAM wasn’t slowing the machine down. Surprisingly, ilolo increased the boot time, with the best improvement (of about 4s), going to TuneUp Utilities 2009 ($49.95, by the way).

TuneUp was also the only one to show an improvement in Office 2007 execution time under XP (from 95.5s to 92.1s to perform a set list of tests), although again the biggest boost was gained by adding RAM — from 95.5s to 83.3s. Under Vista it is a completely different story with all the reviewed utilities showing an improvement, but not much. The Vista machine was running the Office test at 62.4s with 2GB RAM and at 61.3s at 4GB RAM and Avanquest Fix-It Utilities 9 ($49.95 as well) dropping execution time to 60.5s.

A similar test was carried out with Photoshop, which tends to be very processor-intensive. Results were predictable, with the RAM showing an improvement under XP but not under Vista, and software optimisation not showing much improvement under either operating system.

Overall, the reviewers found that when RAM is deficient, it offers better value than software – a stick of RAM is usually under Bt1,000 these days. How do you know if you need more RAM? It really depends on your operating system. If you’re running XP, the most you can make use of is 3.5GB but you’ll find it runs slow with anything less than 1GB. Vista can address up to 4GB and shouldn’t really be run on less than 2GB. If you don’t want to crack open your computer yourself, Com2u can send over a technician to upgrade your computer.

On price Ccleaner offers the best value, being free, and offers many of the same options as the competition. However, it’s made more for geeks than fiddlers and isn’t the most user-friendly of packages. In conclusion, while some software optimisers do fulfil promises of faster computing, they can just as easily slow down your system, and at the end of the day, they’re no replacement for a qualified technician.

Read the review of the XP computer here
Read the review of the Vista computer here

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Com2u Computer Home Service can help get rid of your computer blues, in Bangkok, Pattaya, Phuket and Samui.