Every once in a while, you will see yourself installing programs to your beloved computer; it can be games, applications, or simple Windows-based programs that are meant to work. But sometimes errors occur prior to the installation in the form of a dialog box that tells you to terminate the program.

These problems are caused of missing or damaged files like Config.nt, Autoexec.nt, and Command.com. These are the files responsible to the installation of the said programs. Therefore, these should be filled-in or repaired for us to be able to proceed with the installation.

Methods
There are two methods that we can do to replace or fill in these vital files. The first one involves replacing the files with your own using a notepad file. The second one will be relatively easy. You just have to run the windows repair utility. Here are some straightforward methods.

First Method
1. Insert the installer to your computer’s disc drive.
2. Click on Start, then select/click Run. Type in cmd and hit Enter to pull up the command prompt. This would start the whole process, if you are using a laptop it is best to plug in your laptop.
3. Type in the following commands, then press ENTER after each command input:
Expand CD-ROM Drive Letter:\i386\config.nt_ c:\windows\system32\config.nt
expand CD-ROM Drive Letter:\i386\autoexec.nt_ c:\windows\system32\autoexec.nt
expand CD-ROM Drive Letter:\i386\command.co_ c:\windows\system32\command.com
exit
These would actually give time to your computer to re-boot the system.
4. After doing so, you can now start or install the program.
If the issue is resolved, do not go on with the remaining steps. If not, then proceed to the next few step.
5. Pull-up the notepad and type in these:
dos=high, umb
device=%SYSTEMROOT%system32\himem.sys
files=40

6. Click on File from the top menu, click Save As and change the file name into Config.nt. Save the file.

7. Click again on File and select New. A blank document will be displayed, and then type in these:
@echo off
lh %SYSTEMROOT%\system32\mscdexnt.exe
lh %SYSTEMROOT%\system32\redir
lh %SYSTEMROOT%\system32\dosx
SET BLASTER=A220 I5 D1 P330 T3
8. Click again on File, select Save As, and then change the file name to Autoexec.nt. Save the file.
9. Pull up your Windows Explorer. Get the location where you saved your Config.nt file and copy it. Look for the %SYSTEMROOT%\System32 folder, right-click it, then select paste.
10. Do the same procedure with the Autoexec.nt file.
11. Find the Command.com file, right-click on the expanded Command.com file, and then click/select Copy.
12. Right-click the %SYSTEMROOT%\System32 folder, and then click Paste.
13. Restart.
After doing the steps and the problem still occurs, copy the Autoexec.nt as well as the Config.nt files from the Repair folder in Windows to the System folder. These steps will help you do it:

1. Click Start, select the Run command, particularly type c:\windows\repair in the box, as well as hit enter afterwards. This would help in repairing any damage within the files.
2. Copy the Autoexec.nt,file
3. Click Start, click Run, type c:\windows\system32, and then click OK.
4. Paste (Ctrl+V) the copied file in the specific folder.
5. Right-click the Autoexec.nt file that you just copied, and then select Properties.
6. Select/Click the Read-Only check-box, and then click OK. This would prevent any future harm in the files.
7. Follow the steps above, this time with Config.nt file.

Second Method
1. Click Start, select Run, and then type C:\windows\repair, and then click OK.
2. Copy the Autoexec.nt file in your folder.
3. Click Start, click Run, type %windir%\system32, and then click OK.
4. In the folder that houses all components of System32, you need to press Ctrl + V so that you can paste the file of the Autoexec.nt system in this certain folder.