The popular problem for the computer is the virus problem. The user level who have to repair their own computers must have the excellent software( you can view various virus softwares from stores of www.amazon.com) that can cure various kinds of virus problems and the software must be easy to use for the user level. If the virus problems cannot be cured, the user level will have to format the hard disk (all data in the hard disk will be ereased) and re-install the operating system and other software (this is the last solution to solve the problem).
The another frequent problem is the computer programs crashed, normally, we solve them by uninstall the problem program and reinstall the program again. If you already re-install the problem software and it still does not work and there is the error message that the file or files missing, then you have to search from the internet to download the specific files from the internet to your computer. If you already download the missing file or files to your computer, and it still does not work, it means the link between the necessary files of the operating system and the problem software is broken, and you desperately have to use the mentioned problem, the last solution to solve the problem is to try re-install the operating system software (all data in the hard disk will be erased) and all other software. The last solution to solve the problem by re-install the o. s. software is used only in the case that the mentioned problem software was used to work properly with that computer before.
The operating system program (e.g. windows, linoux, etc.) is something like the middle person or the link between the computer hardware and the other software. When the programs are crashed, the file or files of the operating software and other software often be erased or altered. That is why you have to uninstall the problem software and re-install it.
The user level who have to repair their own computers have to know how to go to bios setup too (for windows o.s.) because when there is the serious virus problem you normally cannot boot the hard drive (drive c:). Click the following if you want to read more about bios setup.
The computer repair books can be purchased online from stores of www.amazon.com. The good skill to repair the computer required some experience and computer knowledge which you can search the good computer books online from stores of www.amazon.com
The product categories are under the 'powered by amazon.com' (right rectangle).