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Showing posts with label fix computer problems. Show all posts
Showing posts with label fix computer problems. Show all posts

Common computer problems and Easy fixes

Thursday, January 14, 2010 0 comments
computer support
If you have computer, then you have probably face these computer problems before. Once you purchase a computer, you must accept that sooner or later it will eventually crash due to a virus or some other massive error. If someone told you that your computer will last more than a decade, don’t believe it because it is just a myth or another sales pitch. But of course, you should take care of it if you want it to last for its third year without any defects. However, there are many people that would prefer to buy a new computer than spend some time trying to fix or figure out the problem with their laptop or desktop.
Usually you will need some kind of maintenance because your computer will tend to lose its original speed and performance. Well, here are some if the common problems that a computer user usually experience. Most of the time the biggest problem that your computer has is YOU – the owner or the user. There are many people that neglect the first signs of computer problems. You shouldn’t neglect those simple maintenance tasks that can enhance or prolong the life of your computer.
1. Computer speed or performance has slowed. There are several reasons why this happens to your computer. Lack of maintenance, fragmented data, corrupted registry, spyware, and unnecessary loading of computer programs and services can surely affect your PC speed and performance. Managing your programs and cleaning your registry can easily boost your computer’s performance speed up to 30%.
2. Computer system freezes and blue screens of death. You need to do some serious diagnostic procedures to effectively know the problem with your computer. Computer virus or spyware are maybe some of the reasons to your computer. Update your anti-spyware removal immediately to avoid this kind of problem and thoroughly scan your computer to see if it has any viruses or spywares. If you find that your computer is free from spyware then updating your hardware drive is the next step. Hardware drives makes it easier for your computer to effectively communicate with other hardware components. Without an updated driver the CPU locks up and may cause problems when you are using your computer. If that doesn’t work try to increase your Computer RAM to help avoid computer freezes. By increasing the RAM you get more use out your computer's computing power.
3. The computer keeps on rebooting again and again. This kind of problem is usually associated with hardware issue. Faulty power supply is usually the cause of this problem. Dirty or defective cooling fan is another reason why your computer is rebooting spontaneously. When your computer is trying to cool itself when the fan is defective it automatically switches off. Dust that accumulated in your computer can trap the heat inside which makes it hotter. What you should do is to clean the fan and make sure that it is running properly. Do not forget to check your power supply.
4. Noises and vibrations. This one is almost certainly that you have hardware issue. High pitched noises can be caused by electronic components. Whatever the reason, you conduct a small investigation. Unplug your computer and remove the case and run the computer to discover the origin of noise. If a loose wire or faulty fan is not the one that is making the noise then it may be time to call a computer tech to help you with your problem.
5. Your browser home page changed itself. It is known as "high-jacking" which is also caused by a Spyware installed on your system. The spyware in your computer installed a java script into your web browser that tells your browser to change settings hence changing the default home page of your browser. What you can do is to run an anti-virus or spyware program to remove the spyware from your computer. All of the problems stated in this article can be avoided easily by simply maintaining your computer.

Windows 7 Guide- The Concept of VPN Reconnect, DirectAccess , Ipv6

Friday, November 20, 2009 0 comments
Roaming users count on VPNs (virtual private networks) to offer a secure connection between their computer and the company Intranet. When a user is sitting in a hotel room, or in a conference room at a customer site, and makes a VPN connection, the user's PC will generally remain connected unless there is some other network issue that interrupts the connection.
However, users who count on wireless broadband connectivity to make a VPN connection while on the go are faced with frequent dropped connections and cumbersome process for reauthenticating and reestablishing the VPN connection every time.
The VPN Reconnect tool allows Windows 7 to automatically reestablish active VPN connections when Internet connectivity is interrupted. As soon as Windows 7 reconnects with the Internet, Windows 7 will also reconnect with the VPN. The VPN will still be unavailable as long as the Internet connection is not available, and the process of reconnecting will take a few seconds after Internet access becomes available again, but VPN Reconnect will make sure that users stay connected with the network resources they need access to.
VPN Reconnect is basically an IPSec tunnel using the IKEv2 (Internet Key Exchange) protocol for key negotiation and for transmission of ESP (Encapsulating Security Payload) packets. ESP is part of the IPSec security architecture that offers confidentiality, authentication of data origin, and connectionless integrity.
In situations such as viewing streaming video over a VPN connection while riding on a commuter train, users typically lose all buffered data and have to start the video over every time connectivity is lost.
The features of the IKEv2 IPSec tunnel and ESP help ensure a persistent connection even if the IP address changes during the reconnect and allows the streaming video to resume from the point it was at when VPN connectivity was lost.
Nothing is better than a VPN that automatically reconnects and retains its connection state? How about not needing a VPN in the first place? DirectAccess is one of the most compelling and game changing features of Windows 7, both for users and for administrators faced with a remote and roaming work force.
DirectAccess offers a persistent and seamless bidirectional connection between the internal network and the Windows 7 system, as long as that Windows 7 system can connect to the Internet. With DirectAccess, remote and roaming users experience the same access to corporate shares, intranet sites, and internal applications as they would if they were sitting in the office connected directly to the network.
IPv6 is required in order to use DirectAccess. DirectAccess connectivity is built on the foundation of globally routable IP addresses that IPv6 gives. IPv6 has been around for a while, and most systems and network devices are ready for IPv6, but the actual adoption of IPv6 as a replacement for IPv4 networking has been slow.
The software giant was aware that IPv6 is not available everywhere, so the company came with the DirectAccess to take advantage of IPv6 transition tools such as 6to4, Teredo, and ISATAP. Within the network, DirectAccess depends on NAT-PT (Network Address Translation-Protocol Translation) to provide connectivity between DirectAccess and IPv4 resources.
DirectAccess uses split-tunnel routing to intelligently route network traffic based on the intended destination. Only traffic destined for the corporate network is routed through the DirectAccess server, while traffic intended for resources on the public Internet is routed directly to its destination. Split-tunneling ensures that the resources of the DirectAccess server are not consumed by unnecessary network traffic.

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