Advice 1: How to change operating system

The reasons that may lead you to reinstall the system a lot. First of all, it should be done in case of deterioration, slowing down your computer due to the large number of errors in the registry, virus infection. In addition, it is quite natural to replace the system with newer, modern. No need to be afraid and to delay the reinstallation of "tomorrow." Once doing it yourself, you will see that it is simple and takes not much time.
How to change operating system
Instruction
1
Before you begin to reinstall the system, care should be taken to preserve the information. Carefully review the contents of the drive on which you are going to put the system (for these purposes, it is recommended that the C drive). If it has files you need in the future (for example, the folder My documents, Inbox, pictures, movies, etc.), transfer them to other media. Better if it is a portable hard disk, DVD, flash drive sufficient volume. In extreme cases, move the data to another logical drive (D, E...) that you do not plan to format.Prepare a CD or DVD (depending on the drive) boot disk and driver disks for the hardware that is installed on the computer. Record system information, computer name in the system account, etc.
2
You can now reinstall the system. To do this, insert the boot disk. Configure the BIOS so that loading begins with CD-ROM. At the beginning of the boot by pressing del/F2 to log in the main window, make the desired settings (in the item "First Boot Device" should be the value of "CDROM"). Then, click on "Save and exit" or F10, exit BIOS. The computer will start to boot from the disk.
Without a boot disk will not do
3
Before you – the main installation menu, select the desired item. Now you need to be very careful, because the installer will ask you about the space on your hard disk where you put system. This section will be asked to format. You must not hurry, think carefully about the answers, otherwise you can lose all the information on the computer. Unless of course you decide to start from a blank sheet, format all partitions. For better performance it is recommended to format all drives with NTFS. Selecting to install the partition, specify its size. It depends on the overall size of the hard drive and installed (so Windows XP is recommended at least 10 GB, if more is better). The remaining disk space can smash at their own discretion.The next phase of work directly installation. To touch anything it is not necessary to intervene only when there is a specific request from the program. At this stage you can enter network settings, computer name, etc. In that case, if you doubt the correctness of the information requested, ignore the issue, press Continue.
4
Within half an hour, the system will be installed on your computer. In recent builds the boot disks provided to install basic working drivers. That is why almost immediately you will have a workable system. Installing missing drivers, start to restore your programs, settings.
Useful advice
If there is no desire or skill to understand the contents of the C drive, copy to a backup disk folder "Documents and Settings" as a whole.

Advice 2: How in the registry to change the value

Registry database of the Windows operating system has a tree structure composed of sections, sub-sections ("hives"), "branches", etc. the bottom element of this structure is the value of the variable. These elements of the structure in the registry most them produce operation as computer programs and users.
How in the registry to change the value
You will need
  • ОС Windows.
Instruction
1
The standard tool for manual work in the system the registry is a Windows application that has its own name, and without hardship given the name "registry Editor" - run this program. If in the main menu of your OS version there is a window to enter a search query, type in it regedit and press Enter. When using versions of older editions of the first menu item "Run" and then type the same command and press the same button.
2
If you know the name of the variable, the value of which you want to change, open the menu "registry Editor" section of the "edit" and select "Find". This command invokes the search dialog screen. To access it and use Ctrl + F. In the Find what field, enter the parameter name, as in "View" uncheck the check boxes in the fields "section Names" and "Values" parameter - this will speed up the search process. Then click "Find next". It is possible that the first of the encountered search algorithm matches will be not what you need - in this case, press F3 to continue searching.
3
An alternative to the automatic search - consistent unfolding of nested folders in the left frame of the application window. If the exact name you do not know, but you know the place the desired variable in the registry structure, use this method to access the desired variable's value.
4
Once the variable is found, click the right mouse button on its name in the right frame of the editor. POPs up the context menu select "Edit" and in the opened following this window and change the contents of the field "Value". If the variable is in the format of REG_DWORD, pay attention to the encoding of the input values - it can be presented both in hexadecimal and in decimal numeral system. An appropriate note should be put next to one of the two fields in the section "counting System". Then press the OK button.
5
At the end of procedure close the window "registry Editor". No questions about saving changes, as do the editors of the other types in this set will not all the edits are already saved by pressing the OK button in the previous step.
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