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Data loss is a condition of computer systems whereby information is destroyed by failures in storage, transmission and processing. Data loss is characterized by the inability to access data from a computer or backup system that was previously running smoothly, the overwriting of data control structures or the abnormality of the operation of devices.
Causes of data loss
Data loss can happen in many ways and at times when you least expect it. Knowing the various types of data loss can help you figure out what might have caused your system to stall.
• Operating system failure
Sometimes the operating system of your computer can crash by itself either when you are using it or when you have left it unused for a long time. The reasons for operating system failure may be hard for the normal eye to deduce and only a professional can be able to help you get your data back, especially if there is nothing wrong with the hard drive.
If you do not have a well performing antivirus program, you stand the risk of your computer being affected by malicious viruses. Such viruses can make your files irretrievable hence necessitating the need for professional help.
CD-ROMs are very sensitive such that if they are exposed to dust or fingerprints, that can cause some of your data to be lost. Apart from damage to storage media, there are other types of damages such as when a computer is exposed to liquids or extreme heat.
• Accidental deletion
Cases of data getting lost due to accidental deletion or being manually overwritten are very common. Data that has been overwritten, can be very hard to recover, but there are professionals who can do their best to get it back. It is therefore essential that you back up your files on an external hard drive to avoid complete data loss.
Data Recovery is the process of restoring data that has been lost in any of the ways mentioned above. It is often done from storage media such as USB flash drives, RAID subsystems, external hard disk drives, magnetic tapes among other electronic devices.
Data recovery involves multiple techniques which can be carried out depending on the cause of the damage. Data recovery experts need not necessarily have physical access to the damaged hardware as they can perform it using remote access software over the internet.
There are four phases of data recovery, which begin with repair of the hard disk drive, imaging the drive to a new drive or disk image file, logical recovery of files, partition, MFT and MFR and finally repair of the damaged files that have been retrieved.
Data loss and data recovery are scenarios that we all have to deal with at one point or the other. If you are able to avoid those situations that can cause data loss, then you should do so because data recovery is costly depending on the kind of data.
You may be planning to purchase a computer either for home or for your business. This may seem like a small decision to make but it actually isn’t, in fact it can also be costly if you so not make your choices right.
In order to get the ideal computer that you are looking for, you will need to put a few things into consideration. The first thing you will need to ask yourself is whether you want a new, used or refurbished computer. Making this decision will solely depend on your budget. If you are looking for a good computer and working with a tight budget, then going for a used or refurbished computer is your option since it will save you some money. Unfortunately you could also make a bad purchase and buy a computer that has problems and can cause you sleep less nights troubleshooting the issues, could cause you to lose data or delay any projects that you are working on. If you have computer problems you can visit the Philadelphia data recovery company for assistance with any situations that might require you to salvage important information.
The refurbished computers are used computers that people return to the company and they are looked at but are not sold as new again. The used ones you will get from owners of the computers who are looking to sell the computer they are using for one reason or another. When buying refurbished computers you need to look at the initial damage and also the inside just to make sure that it is working well. If there are programs that are installed in these computers, make sure that you get the CDs that will be used to operate them. When buying a used computer to safe a buck, I would certainly recommend eBay as being one of the best sources as they have a large market and will allow you to review the sellers reputation.
The buyer is always aware of what they want in a computer before buying it. Be sure to check that you have everything in that computer as per your requirements before purchasing it. The first thing someone may need is a CD burner. If you are going to be making CDs and DVDs ensure that the computer has a CD burner.
The other important thing to pay attention to is the memory. Make sure that your computer has enough memory for the intended work. The more memory a computer has the more efficient it will be. You also need to consider the type of hard drive that the computer has. The hard drive holds the final document so make sure that there is enough space in the hard drive and also check to make sure that it runs at good speed which will not slow down the entire computer while it is being used.
The other most important this to consider is the processor. There are several processor manufacturers currently who all promise that what they have is the best. If you do not know how to check the processor, you may need to sort the help of a computer guru who fully understands all about computers.
Basically what you will need to consider when buying a computer are all the important things that you are looking for including the basic things like the memory and processor. Once you get a computer that has all the functions and programs that you are looking for, you can start negotiating the price and ensure that you pay for what you want. If you are not good or familiar with the insides of a computer, look for a computer guru whom you can go shopping with so that he or she can help you make the best choice.
Description of Computer Hacking
- Computer hacking involves creating hateful alterations to a program so as to attain a goal which is not the initial intention for which it was created. Someone who carries out these acts is referred to as a Hacker.
- This is normally someone who is a skilled programmer, who views hacking as a talent and a means of putting their skills into use in real life events.
- However, some hackers have more harmful intentions than just showing off their skills, such as stealing confidential data, attaining forbidden access, etc.
- Hacking is a grave setback. Hacking has become greatly enhanced after the inception of internet. This is because it is much easier now to access systems all over the world, provided by this technology.
- The rising utilization of the internet has made hacking more serious nowadays. Hackers are normally young people involved in programming industry, although there are some elderly people involved sometimes.
- Also, accessing any kind of data is easy and this has assisted to enhance skills in hacking. Now, it is not necessary for someone to be a professional programmer to be able to carry out hacking on a computer or personal network.
Dangers of Hacking
Hackers have turned into such experts that even major software companies like Microsoft are in danger, leading to loss of millions of dollars each year. They do not just target giants, but private users are also prone to this danger.
Hackers cause the following problems;
- Stealing of private data.
- Destroying credit.
- Illegal access to personal information.
Precautions to Avoid Hacking
Hacking is a complicated problem, but the procedure of protecting yourself from this crime is easy.
Precautions which are simple can signify the difference between a system which is secure and foolproof and one which is vulnerable.
Below are some guidelines to keep yourself safe from hackers:
- Hackers often look for loopholes in your security. Therefore, it is vital to monitor all the small details so as to acquire a foolproof security for your information and computer.
- Hackers use tools such as Spyware and Virus to make your security weak and secretly transmit your personal data to the wrong people. The ideal way to defeat them is to utilize software for anti-virus and anti-spyware.
- Another effective method is to utilize the latest kinds of software for security and Operating System because they become ineffective over time.
- Utilizing Firewall is also a great method to prevent illegal access to your system. It is also vital to take care when browsing the internet and utilizing emails.
Damage Caused by Hacking
- Every month, more than 500 new worms and viruses are set loose on the internet.
- Of late, 82% of the latest anti-virus users have had a virus infection. In just a few hours, the latest, quick moving viruses can infect very many computers.
- Security firms can take a lot of hours, or even days to build signature for anti-virus, to protect themselves against the latest viruses. At this time, everyone is vulnerable.
- Infection can happen through emails, downloads or instant messenger.
It can be quite a traumatizing experience when ones computer is crashed, but all can be solved if one knows how to go about it.
Before your computer is completely crashed, there are signs that you can keep an eye on and which can be solved before your computer is completely dead. Some of these things include computer being slow, or freezing up when you are using it, these are signs that your computer will be crashed soon if nothing is done.
Some of the basic trouble shooting steps include checking physical connections just to be sure that they are all in correctly plugged into the computer and that the monitor is at its right place.
The other thing that you can do when your computer is lagging or is freezing is to reboot the computer. Sometimes that little act of turning it on and off fixes some little mishaps. When all these fail, try removing any external things like DVDs, CDs, USB or any media cards; then when done reboot your computer. These steps are meant to rectify small problems that may eventually become a major issue.
Following these basic steps will help determine the extent of damage. If rebooting takes longer than usual or crashes all together and goes silent then you will know that you have a major problem at hand. Other signs of serious problems are when the computer indicates that ‘primary device or drive not found’ or ‘drive not formatted’ or ‘operating system not found’, the other thing that you are likely to see is a blue screen that indicates that your computer has crashed.
The four main causes of these problems are driver conflict, malware, corruption of the operating system and hardware failure.
When its malware and viruses what you need to do is have an up to date antivirus and make sure that you run scans regularly. Use one antivirus at a time so as to avoid conflicts of the two.
When dealing with a conflict in driver or device, your best option is to check for another device manger by clicking on the start menu button. The device manger will appear on top, click on it and a box will pop up and will show all devices that the computer uses to function. If the drives are not updated, there will be yellow triangles on any of those on the list. In this case you will need to update the devices.
If it is a hard drive failure you will need to replace the piece that has a problem. If prompted do not reformat the drive since it may result to losing everything including the operating system.
If it is the operating system that is corrupt, your best option is to reinstall a fresh copy of windows. This will completely clean your computer and will remove all data and programs that your computer had. It is therefore important to have back up for your data before you take an action to install a fresh copy of windows.
With all these trouble shooting points, you should be in a position to recover from a crash and continue working on your computer. Therefore there is no need to worry should your computer crash or start developing problems like slowing down and freezing.