Laptop computers are becoming smaller, lighter and more powerful, all of which contribute to increased heat generation.

As technology advances, laptops are becoming smaller in size. The demands of users however stay pretty constant. Everyone demands the best for the cheapest possible price.
Smaller laptops have less space for components than that of their larger competitors leading to poor ventilation and air flow. This in turn will negatively contribute to heat generation and poor dissipation.

There are however a few ways that we can show you to help prevent laptops from becoming too hot.

How to Prevent Laptops Overheating


1. Laptop Placement

Always ensure that your laptop is on a flat, hard surface. Heat will usually escape through vents underneath the laptop or from the sides.
Using your laptop on surfaces such as carpets, beds and laps will restrict airflow and the heat will not be able to escape, increasing the temperature of the laptop further.
The heat from your laptop can be especially dangerous when using the device on your lap and can lead to infertility in men.
Processors within laptops are usually programmed to switch off automatically when they reach 95 degrees to prevent damage to hardware but unfortunately, at this temperature,  severe burns to legs can also happen. Always ensure your laptop is free from obstruction.

If you do not have a flat surface or are using your laptop in bed, I would recommend that you invest in a laptop heat dissipation mat. There are a number of different brands available and they are extremely cheap too. The Targus Laptop Mat is a good choice and is suitable for laptops up to 17″.

2. Cleaning Your Laptop Fan

Inside your laptop is a processor, and a graphics chip, both of which can become extremely hot. These components are usually fitted with a fan to dissipate heat from within. Unless you’re an experienced computer engineer or electrician, I do not recommend opening up your laptop to clean your fans. It’s very time consuming and can be very fiddly!

Fans work by drawing in cool air to blow out the hotter air inside. Unfortunately dust and other particles are drawn into your laptop which sit on your expensive equipment and most importantly, the fan. When a fan is covered in dust, it’s cooling performance is diminished, resulting in a much poorer airflow.

If you have a laptop that is overheating, you will probably notice that the fan is making a lot of noise. This is because the aerodynamics of the fan have changed and also because the fan has to work harder to cool the computer because it’s clogged with dust.

The easiest way to clean your laptop computer is to purchase an air duster. These cans of air blast out highly pressurised air into your laptop and dust is then blown out of the vents, increasing airflow which of course decreases the temperature of the laptop when it’s running. This is a very inexpensive way to clean your laptop from dust and the improvement is highly significant.

Links to Retailers Selling Air Dusters

Amazon : Over 20 different brands and prices starting from just a few pounds.
Viking Direct:  Own brand product and various laptop cleaning products under £10.

3. Change The Power Setting on Your Laptop.

By changing the power setting on your laptop, you can place the machine into a lower power mode that will run at a slightly slower speed for an improvement in both battery life and heat generation. Power settings can be found in control panel on a PC or within System Preferences on an Apple device.

4. Check Running Processes.

Sometimes, a program may be running abnormally that causes the laptop to dedicate all its processing power to that application. This means that your laptop will become very slow and the CPU (processor) will be running at 100%. When a processor runs at 100%, it generates the most heat.

To check whether there are any issues with abnormal programs, Press CTRL+ALT+DELETE and then click Task Manager. Then click the button that says “Show processes from all users”. Next, order by CPU by clicking the word CPU in the CPU column. The processes with the highest number are those that are taking the highest percentage of your laptops speed and generating the most heat.

You can then use Google to find out what the process does and whether it is safe to end the process. If you have a slow computer, you can of course call us to look at your machine remotely to resolve any problems.

note: System Idle Process is not a concern. If it’s running at 97%, it means your PC is 97% Idle (ie: Not doing Anything)

5. Run a Spyware Scan

There is a very good chance that overheating is caused by a nasty virus running your laptop into the ground. Chances are you have a very slow machine if this is the case, but not always!

The following programs are useful checking for such nasties.

hp

SuperAntiSpyware claims to remove ALL spyware. We ran a few tests using this software and it’s very user friendly. It detected and removed over 180 spyware items that our antivirus software did not pick up. This software is

MalwareBytes is the most efficient program for cleaning up internet spyware. Although this product is not free, it is highly recommended. A full scan generally takes around 30 minutes to complete on most modern systems. We ran the scan on our own machines and were very surprised at what was found and we have Anti-Virus software on all our computers. As with most products on the market today, it’s better to not rely on one piece of software and instead, a wider view to protection should be encouraged. The benefit of this software is that its relatively cheap and you don’t pay for it each year, it’s a one off cost and then it’s yours forever.


Posted in Articles, Laptop Tips | Tagged , , , , , , | Leave a comment

If like myself, you’ve spent Months, trying to find out why a perfectly installed FreePBX/Asterisk system just will not work with an external SIP extension, then I really feel for you!

Asterisk is great “When It Works” , but when it doesn’t, You probably end up with many headaches and increased stress levels.

Well today – FINALLY -
I’ve fixed the issue with no sound on external sip calls and am going to reveal just how I did it.

No sound with SIP | No Sound With Asterisk| No Sound With NAT

To correctly troubleshoot your issue, make sure that the following steps are taken.

  1. On you router, open up the following ports and forward them to your asterisk box. Your asterisk box may be in the form of (FreePBX, AsteriskNOW or TrixBox) – They all use the same formatPorts to open for External SIP with NAT

Once these ports have been forwarded to the IP of your Asterisk server, give your router a reboot. Re-Login to your router just to reconfirm that the posts are infact pointing to the correct IP of the Asterisk Server.

The next step is to ensure that you configure your NAT settings on the Asterisk server correctly.
The following image shows how best to set up your settings.

If you’re behind a router with a Static IP but your internal network (including Asterisk) is on a 192.168.x.x network, these settings apply to you. If not, simply change these to work with your network setup.

Asterisk NAT Settings

Another important tip for troubleshooting your sound issue is to make sure that you enable the codecs that you will be using. If you’re using a softphone for example, make sure it supports calling with your enabled codecs. If not – Make sure y otou enable them in Asterisk. If they’re not listed, try a different softphone but generally, you should be okay.

All the other configuration options are not external to Asterisk. This is where I went worng. I tried tweaking and changing asterisk settings for months to no avail.   SAVE YOUR TIME

If you have No Audio – It’s to do with your ROUTER or FIREWALL.
If you’ve configured the ports as I’ve shown above, there are only a few things left to check.

1. Internal firewall. If you’re using a softphone on a machine, make sure the firewall is disabled for testing. If it works, you need to open up the same ports on the machine as you did in the router.

2. Router. Many of today’s commercial routers implement SIP ALG (Application-level gateway), coming with this feature enabled by default. While ALG could help in solving NAT related problems, the fact is that many routers’ ALG implementations are wrong and break SIP.

THIS WAS WHAT WAS WRONG WITH MY SETUP
Everything on my router was in fact correct. I had never heard of ALG before, mainly because there was no mention of it on my routers administrator panel anywhere.  After doing a google search for <my router model SIP no sound” I came across a small post relating to ALG.
Even though ALG was not mentioned in my router page, it’s still there and active, just not visible on the front end.

I had to telnet into my router and login and then issue a command to turn ALG off.

List of routers with SIP ALG enabled

The following is a list containing SIP ALG router models, their issues and how to disable SIP ALG (enabled by default in most of the cases). Please add more data to this list if you have experimented problems due to a SIP ALG router.

SpeedTouch

Models: ST530 v6 (firmware >= 5.4.0.13) comes with SIP ALG enabled by default.
NAT type: symmetrical
Issues:

  • No incoming calls.
  • It replaces the private IP appearing in SIP headers with the public IP using a dumb text replacement. If for example the private IP appears in the “Call-ID” it replaces it too (that it’s completely unnecessary).

To disable SIP ALG:

~# telnet router
-> connection unbind application=SIP port=5060
-> saveall

Zyxel

Models: 660 family comes with SIP ALG enabed by default.
NAT type: symmetrical

Issues:

  • No incoming calls.
  • SIP protocol broken making 50% of outgoing calls impossible because the wrong values are inserted into SIP headers.

To disable SIP ALG:

~# telnet router
Menu option “24. System Maintenance”.
Menu option “8. Command Interpreter Mode”.
ip nat service sip active 0

Netgear

Models: WGR614v9 Wireless-G Router, DGN2000 Wireless-N ADSL2+ Modem Router
Firmware V1.0.18_8.0.9NA
To disable SIP ALG: From Wan Setup Menu, NAT Filtering, uncheck the box next to “Disable SIP ALG”

SMC

Models: ToDo
NAT type: No symmetrical
Issues:

  • The ALG doesn’t replace the private address in “Call-ID” header (that is correct) but it does replace the “call-id” value in “Refer-To” header so SIP transfer is broken.

To disable SIP ALG: ToDo no ALG related options found via web and telnet. No idea of how to dissable it.

Linksys

Models: WRV200, WRT610N
NAT type: Symmetrical
Issues:

  • The ALG replaces the private address in “Call-ID” header (not needed at all). Some phones (as Linksys with latest firmware) encode the “Call-ID” value in the “Refer-To” header (by escaping the dots) so the private IP appearing there is not replaced with the public IP. This causes that the call transfer fails since the proxy/PBX/endpoint will not recognize the dialog info.

To disable SIP ALG: ToDo no ALG related options found via web and telnet. No idea of how to disable it.
To disable SIP ALG on WRT610N: Web Interface: Administration, Management, under side heading ‘Advanced Features’ SIP ALG, can be disabled.

Fortinet

Models: 800 comes with SIP ALG enabed by default.
To disable SIP ALG:

~# telnet firewall
config system settings
set sip-helper disable
set sip-nat-trace disable
endconfig system session-helper

delete 12
end

I hope this guide has been helpful and it is rightly indexed by Google.
Please let me know if this fixes your own issue or if you find a solution, again, please let me know as it really will help a lot of people.
Lets call it ” Save the Asterisk Headache Campaign”
Posted in Tutorials | Tagged , , , | 2 Comments

Free HP-MicroserverSysFix Group, a provider of UK IT Support Contracts for small businesses have taken the unusual step of offering all it’s new clients, a free Small Business Server for the duration of their IT contract. This is great news for small businesses looking to expand, without the huge costs involved in purchasing their own equipment.

The free server allows businesses to share files internally whilst implementing rigorous security measures which protect business critical data to authorised users only. The server also allows VPN connections allowing staff to work from home whilst still having access to company data and resources securely. Some of the other benefits a small business server could make to a business include;

IDS: Intrusion Detection System.

HTTP Proxy: Speed up internet access and impose viewing and usage restrictions resulting in increased productivity.

Traffic Priority: Give dedicated speed to specific people or services.

Mail Server: Host E-Mail internally.

HTTP Server: Host your own Website internally.

Online Backup: Option to back up all company data.

The offer of a free server is open to all small businesses operating within the UK who have at least 3 machines under a support contract. Installation and configuration is completely free excluding any expenses.

Posted in Press Releases | Tagged , , , , , | Leave a comment

A server is a computer system that serves or provides a specific service to a group of users. A typical service could be one or more of the following:

  • File Sharing
  • Website Hosting and Processing
  • Email Hosting and Processing
  • Application Sharing
  • Remote Working

A Server is often mistaken as specific hardware when infact any computer system can act as a server, even a laptop!
A server is simply a computer system that is dedicated to providing a specific service to a group of users or even a single user.

A server can be a high powered expensive computer system, or an extremely low cost device but obviously, the more people using a server, the more powerful it would need to be in order to provide the service or services at a “nice” speed. Just like a computer – the more you install and the more open programs you have open, the slower and less responsive it becomes.

Posted in Uncategorized | Tagged , , , | Leave a comment

SysFix Group , a leader in the provision of small business IT Support have moved into new offices. Our new address is 87 Notting Hill Gate, London W11 3JZ.
SysFix Group provide a range of services including Online PC Support, Laptop Backup solutions, IT Support Contracts as well as Computer Repairs and Laptop Repairs for home and small businesses.

Posted in Uncategorized | Tagged | Leave a comment

Porn Blocker

“My Porn Blocker” is porn blocking software designed to provide a safe Internet access for child. This program keeps track and checks the content of every web-page the child browses through in the Internet Explorer. If the program finds some obscene content (characteristic of pornography, violence, religious sects, etc.), the software will immediately block viewing such pages.

The Porn Blocking software is a whole software package that is integrated in Internet Explorer and consists of some controlling functions. Each of these functions forms an obstacle in the way of obscene information from the Internet (pornography, drugs, graphic violence) providing safe Internet access for child. And before your child sees any page, it is checked by all those functions.

The program will satisfy all your requirements and wishes about Internet parental control. You can easily configure the program for pornography blocking, blocking sites with violence scenes, filtering sites that popularizes drugs, to filter the gambling games, the questionable religious sects and other forbidden materials. The Porn Blocker will filter the content of every visited and viewed pages. You can allow visiting sites only from the ‘White list’ and forbid sites from the ‘Black List’, allow Internet Explorer using only in certain days and hours, write in the special log file what sites your childs visited and receive this log by email.

logos

The program has a prominent advantage over the usual way most of the similar porn blocking software functions. Most of such programs check only the URL of the requested page for being in the database of “indecent” addresses. This way of porn blocking is not effective because there appear hundreds of new sites every minute. Unlike other programs, this has special functions that allow analyzing the page content itself. That is why even if your child comes across a newly appeared site with obscene content, the software will stop your child from viewing the website.

DOWNLOAD PORN BLOCKER

Posted in Software | Tagged , | Leave a comment

Laptop computers have come down in price over the past few years , as low as £200 for some models, but these laptops are dangerous. With laptops becoming increasingly light and compact, we’re more inclined to take them with us wherever we go. We now find ourselves in a situation where we don’t have time so sit down and perform a backup to a usb stick or other external device, not to mention where we stored it for safe keeping.

Why is it important to back up our Laptop Computers?

  • Laptop computers are light and easily lost or stolen.
  • We travel around with our machines more than we used to, increasing the risk of loss and theft.
  • Data is stored on Hard Drives. Did you know that ALL HARD DRIVES WILL EVENTUALLY FAIL?
  • Data cannot easily be replaced. Treasured moments such as Photographs cannot be replaced.

Laptop Backup is therefore essential!

… but it can be a tiring and cumbersome task and how many of us really perform those all important backups. SysFix Backup Pro automates the entire process through new Laptop Backup Software which backs up your critical data no matter where you are. Your data is encrypted and sent to 2 data centres, one in Germany and the other in London. In the event of a catastrophe , or as simply as mistakenly deleting files, you have the power to click a button and restore your chosen files right to your desktop, it even keeps multiple versions so it keeps all those changes you made to your documents too.

What about PCs and Apple Macs?

SysFix Backup Pro works with Desktop PCs, Servers and Apple Macs too. The Apple Online Backup software is exactly the same as our PC version so it’s very easy to use. SysFix Backup Pro even comes with a web interface so you can restore files for a friend or partner if they require assistance, or from our backup software directly.

For more information regarding Online Data Backup, Please see;
http://www.sysfix.co.uk/IT-Support-London/Online-Data-Backup/laptop-backup.html

Posted in IT News | Tagged , , , | Leave a comment

This RT VMWare Appliance has now been made available for purchase and download.
The appliance will save you lots of time and effort and it’s practically ready to go straight after installation.

Cost: £59.00

Time to Install: 10 Minutes

Time to configure: 10 minutes

This version includes RT3.8.7 + RTFM (latest version) + SLA (Automatic Service Level Agreements)

Posted in Uncategorized | Tagged , , , , , , | Leave a comment

Paul Stanbra, Founder of SysFix Group is running a 10km marathon in London on the 17th October 2010 for Cancer Research UK.

Cancer has touched the lives of many unfortunate people and I want to do my bit for charity. It’s affected 2 of my own family members so fully understand the upset and turmoil this nasty disease causes. I’ve never actually done anything for charity really apart from those school sponsored walks so here I am, placing my scrawny little  legs on the ground for charity.
Having Asthma – this may be harder than it sounds!

Please sponsor me as much as you can afford. Minimum donation is £2.
It’s through your sponsorship that I will gain my motivation and know I am running for a worthy cause that you all support.

Please donate if you can!
http://www.run10ksponsorme.org/paul-sysfix

Paul Stanbra

 

Posted in Press Releases | Tagged , , | Leave a comment

Laptop Backup is a real problem. Laptops carry a huge amount of data nowadays, but yet we are insistant on carrying our life with us wherever we go despite the risks.

What if you lose your laptop or even worse, it’s stolen from your person or from the home. None of us have adequate backups and I know from personal experience, it’s not nice when it happens to you.

SysFix Backup Pro is a secure data backup system which stores your valuable data at our remote data storage centres located in London and Germany. The SysFix Backup Pro, online file backup software allows unattended, totally automated backups of your Laptop Data direct to our servers. Offsite data storage comes in 10gb blocks and can be shared with as many machines as you wish. Offsite data backup is extremely important for laptop users as they tend to fail more often.

 

For more information, see http://www.sysfix.co.uk/IT-Support-London/Online-Data-Backup/laptop-backup.html

Posted in Recommended 3rd Party | Tagged , , , , , | Leave a comment