Desktop Computer Troubleshooting

desktop computer troubleshooting

Desktop Computer Troubleshooting is the process or identifying and fixing problems. Computer troubleshooting may involve hardware or software and can sometimes involve both at the same time. The basic process of troubleshooting is to check the most general possible problems first, and then gradually check for more specific problems. This provides a logical approach to problem solving and can apply to multiple types of products.
Take the War out of the War Room
"SteelCentral solutions play a fundamental role in helping IT organizations maintain and optimize the performance of their applications and network, and with SteelCentral Portal they are able to more easily collaborate and resolve performance issues from the ’top-down.’"
- Shamus McGillicuddy, Senior Analyst, Network Management, Enterprise Management Associates, Inc.
Enterprises often take a fragmented approach to managing applications. SteelCentral brings everything together in a single pane of glass, eliminating the war room approach to address performance issues that often take months to fix or never get fixed.   This allows your teams to collaborate and simplify your troubleshooting efforts by leveraging unique approach that seamlessly blends application performance, network performance, and end-user experience data. 

Troubleshoot and resolve application performance issues faster
Provide stakeholders with meaningful data
Focus on strategic initiatives rather than firefighting
Real user application performance troubleshooting
Know exactly where the applications problems are occurring, and what caused them. Troubleshoot root causes down to the line of code, infrastructure or network configuration. Examine through the most granular application performance data to troubleshoot application issues.
Receive alerts and diagnoses as soon as problems occur
Reduce release issues by 30% and release 7 times more frequently
Troubleshoot Java and .NET web apps, and packaged applications
Save money by quickly troubleshooting applications.
“Tools like AppInternals let us remove the guesswork and emotional finger-pointing and get down into facts about how the application is actually performing. Facts get rid of the emotion very quickly.”  – Eric McCraw, Global Web Systems Manager for IT, National Instruments
Application troubleshooting with SteelCentral provides businesses with between 10-30% IT budget savings. There is no need to recreate problems – the data has already been captured with SteelCentral.

IT Troubleshooting Program

You may have realized by now that computers are not human. In spite of all the movies out there and their incredible complexity, they are not human. They are not subject to mood, personality, or what they had for breakfast that morning. They act in the manner they are programmed to act, every time.

What is this babble, you may ask? But, they often don’t work, and break! They stop functioning and make my life miserable! How can you say they act in the manner they are programmed to act, every time! That is absurd!

Is it?

For More: IT Troubleshooting

Computer software has no free will. It is written to expect a very specific environment and to rely on that environment to be set up, exactly as it was intended.

For example, if a service stops running, because the account used to run that service had an expired password, then even though your program has ceased to function at this level, it is still acting in the manner it was programmed to. The program expected to be run with a password that is current. When that perimeter is changed, it cannot adjust to that and it stops working. This behavior will happen, every time, without exception.

Windows will never give a smile and a wink and say, “Ok, your password expired, but this one time… go ahead buddy…I’ll overlook it…”

It is essential you start with this fundamental truth. Because if you do not believe the answer is there, you will not look for it. Remember for every issue there is a solution.

Your quick guide to ITtroubleshooting

I define IT troubleshooting as, “discovering the cause of the problem and implementing the solution.”

Computer software has no free will. It is written to expect a very specific environment and to rely on that environment to be set up, exactly as it was intended.

For example, if a service stops running, because the account used to run that service had an expired password, then even though your program has ceased to function at this level, it is still acting in the manner it was programmed to. The program expected to be run with a password that is current. When that perimeter is changed, it cannot adjust to that and it stops working. This behavior will happen, every time, without exception.

Windows will never give a smile and a wink and say, “Ok, your password expired, but this one time… go ahead buddy…I’ll overlook it…”

It is essential you start with this fundamental truth. Because if you do not believe the answer is there, you will not look for it. Remember for every issue there is a solution.

Computer Troubleshooting Basics

Do you know what to do if your screen goes blank? What if you can't seem to close an application, or can't hear any sound from your speakers? Whenever you have a problem with your computer, don't panic! There are many basic Computer troubleshooting techniques you can use to fix issues like this. In this lesson, we'll show you some simple things to try when troubleshooting, as well as how to solve common problems you may encounter. 

General tips to keep in mind

There are many different things that could cause a problem with your computer. No matter what's causing the issue, troubleshooting will always be a process of trial and error—in some cases, you may need to use several different approaches before you can find a solution; other problems may be easy to fix. We recommend starting by using the following tips.

• Write down your steps: Once you start troubleshooting, you may want to write down each step you take. This way, you'll be able to remember exactly what you've done and can avoid repeating the same mistakes. If you end up asking other people for help, it will be much easier if they know exactly what you've tried already.
• Take notes about error messages: If your computer gives you an error message, be sure to write down as much information as possible. You may be able to use this information later to find out if other people are having the same error.
• Always check the cables: If you're having trouble with a specific piece of computer hardware, such as your monitor or keyboard, an easy first step is to check all related cables to make sure they're properly connected.
• Restart the computer: When all else fails, restarting the computer is a good thing to try. This can solve a lot of basic issues you may experience with your computer.

Vmware Networking

VM Network in VMware. Switches are used to connect multiple devices on the same network within a building or campus. ... Routers analyze the data being sent over a network, change how it is packaged, and send it to another network, or over a different type of network.

Using the Virtual Machine Control Panel (Edit > Virtual Machine Settings), you can add virtual Ethernet adapters to your virtual machine and change the configuration of existing adapters.

Adding and Modifying Virtual Network Adapters

To add a new virtual Ethernet adapter, follow these steps.

1. Be sure the virtual machine to which you want to add the adapter is powered off.
2. Open the Virtual Machine Control Panel (Edit > Virtual Machine Settings).
3. Click Add.
4. The Add Hardware Wizard starts. Select Network Adapter. Click Next.
5. Select the network type you want to use - Bridged, NAT, Host-only or Custom.
6. If you select Custom, choose the VMnet network you want to use from the drop-down list.
   Note: Although VMnet0, VMnet1 and VMnet8 are available in this list, they are normally used for bridged, host-only and NAT configurations, respectively. Special steps are required to make them available for use in custom configurations. You should choose one of the other switches.
7. Click Finish. The new adapter is added.
8. Click OK to save your configuration and close the Virtual Machine Control Panel.

To change the configuration of an existing virtual network adapter, follow these steps.

1. Open the Virtual Machine Control Panel (Edit > Virtual Machine Settings).
2. Select the adapter you want to modify.
3. Select the network type you want to use - Bridged, NAT, Host-only or Custom.
4. If you select Custom, choose the VMnet virtual network you want to use for the network from the drop-down list.
5. Click OK to save your changes and close the Virtual Machine Control Panel.
6. Be sure the guest operating system is configured to use an appropriate IP address on the new network. If the guest is using DHCP, release and renew the lease. If the IP address is set statically, be sure the guest has an address on the correct virtual network.

What is SD Wan in simple terms?

SD-WAN is an acronym for software-defined networking in a wide area network (WAN). SD-WAN simplifies the management and operation of a WAN by decoupling the networking hardware from its control mechanism. This concept is similar to how software-defined networking implements virtualization technology to improve data center management and operation.^[1]

A key application of SD-WAN is to allow companies to build higher-performance WANs using lower-cost and commercially available Internet access, enabling businesses to partially or wholly replace more expensive private WAN connection technologies such as MPLS.

American marketing research firm Gartner predicted in 2018 that by 2023 more than 90 percent of WAN edge infrastructure refresh initiatives will be based on virtualized customer premises equipment (vCPE) platforms or SD-WAN software/appliances.

WANs allow companies to extend their computer networks over large distances, connecting remote branch offices to data centers and each other, and delivering applications and services required to perform business functions. Due to the physical constraints imposed by the propagation time over large distances, and the need to integrate multiple service providers to cover global geographies (often crossing nation boundaries), WANs face important operational challenges, including network congestion, packet delay variation, packet loss, and even service outages. Modern applications such as VoIP calling, videoconferencing, streaming media, and virtualized applications and desktops require low latency.Bandwidth requirements are also increasing, especially for applications featuring high-definition video. It can be expensive and difficult to expand WAN capability, with corresponding difficulties related to network management and troubleshooting.^[1]

SD-WAN products are designed to address these network problems. By enhancing or even replacing traditional branch routers with virtualization appliances that can control application-level policies and offer a network overlay, less expensive consumer-grade Internet links can act more like a dedicated circuit. This simplifies the setup process for branch personnel. SD-WAN products can be physical appliances or virtual appliances, and are placed in small remote and branch offices, larger offices, corporate data centers, and increasingly on cloud platforms.

A centralized controller is used to set policies and prioritize traffic. The SD-WAN takes into account these policies and the availability of network bandwidth to route traffic. This helps ensure that application performance meets service level agreements (SLAs).

WAN - Wide Area Network

A wide area network (WAN) is a geographically distributed private telecommunications network that interconnects multiple local area networks (LANs). A LAN is a group of computers and network devices which are all connected to each other, typically from within a short relative geographical distance. In an enterprise or business, a WAN may consist of connections to a company's headquarters, branch offices, colocation facilities, cloud services and other facilities. Typically, a router or other multifunction device is used to connect a LAN to a WAN. Enterprise WANs allow users to share access to applications, services and other centrally located resources. This eliminates the need to install the same application server, firewall or other resources in multiple locations, for example.

WANs are not restricted to the same geographical location as a LAN would be. A LAN can be set up in any number of geographical areas and be connected to a WAN—meaning a WAN is not constrained to one specific location.

A virtual private network (VPN) facilitates connectivity and security between WAN sites. Different VPNs can be utilized for different use cases. An IPsec VPN is more commonly used in continuously open site-to-site connections, such as those between branch offices and headquarters locations. An SSL VPN is often the preferred choice for enabling remote access for individual users because the data transmitted from users across the WAN is encrypted. Direct fiber optic links are also used to connect sites on a WAN – and they almost always offer greater performance, reliability and security than VPNs, but they are cost-prohibitive for most enterprises to procure and operate.

Types of WAN connections and how WAN connections work

WAN connections can include wired and wireless technologies. Wired WAN services can consist of multiprotocol label switching, T1s, Carrier Ethernet and commercial broadband internet links. Wireless WAN technologies can include cellular data networks like 4G LTE, as well as public Wi-Fi or satellite networks.

What are the chances of growth for rf drive test engineer in telecom sector?

RF drive engineer opportunities are projected to grow steadily through 2015 - in terms of both salary and number of job opportunities. Rapid growth in RF product development should result in opportunities for experienced RF Engineers that have hands-on experience developing products.

The RF Engineers are the professional experts known within the electrical engineering arena of IT and Telecom sector. They are also called Radio Frequency Engineer. Usually, engineers work with gadgets that send or receive radio waves, with wireless devices, radios, and mobile phones. All kinds of communication run through radio waves, whether it is wireless or mobile devices, guided by RF engineer.

The Radio frequency engineering is a huge and rising industry. Over the last few years, it went up from simple commercial radio, TV and military communication techniques to being a crucial area of technology that is needed for the global economy. Wi-Fi, satellite communications, 4G networks and more are all possible through RF technology.

In cellular system propagation models designed for the specific areas or terrain. ... Drive testing is method of measuring and assessing the QoS of mobile network. Different sites of recent technology 2G, 3G, HSPA, WCDMA, Long Term Evolution (LTE), WiMAX are analysed by drive testing with TEMS Investigation tools.