ntoskrnl.exe

Question

Windows error message with ntoskrnl.exe.

Cause

This issue can be caused by a corrupt, improperly configured, or missing boot.ini.

Answer

If any disk drives were recently added/removed, the boot.ini was modified, something was recently changed it is possible that your boot.ini is no longer setup properly or corrupted. Verify that the boot.ini is correctly configured.

To view, modify, or add the boot.ini file either boot from a bootable set of floppy diskettes for your operating system or if you are running Microsoft Windows 2000 or Windows XP enter the computer through the recovery console.

If the boot.ini file is found and contains no errors this issue can also be resolved on computers running Windows 2000 or Windows XP by running chkdsk /r in the recovery console. See the chkdsk command page for additional information and help with this command.

Not a valid Win32 application

Question

Not a valid Win32 application.

Often this error message will be similar to the below error message.

C:\Program Files\myprogram\program.exe is not a valid Win32 application.

Cause

This issue can be caused by any of the below possibilities.

1. File is corrupt, bad, or missing.
2. File is not designed for your version of Windows.
3. File is a virus, worm, or other malware file.
4. Hardware incompatibility.

Answer

File is corrupt, bad, or missing

If the file or program you're attempting to run is corrupt or missing, Windows will be unable to execute the file properly and sometimes generate this error message.

Download files

If you downloaded this file and verified it is complete and compatible with your version of Windows, delete the file and try downloading and running it again. It's possible during the download that the file became corrupted.

Finally, if the second download does not work, try downloading the file from a different webpage. It is possible that the person or company maintaining the website mistakenly uploaded a corrupt version of the file you're attempting download.

Installing a program from a CD or other disk

If you're attempting to install a program and are getting this error, verify that the CD is clean. If the CD is dirty or bad, you could get this error during the install or after the program has been installed because it was not copied properly onto the computer.

Running a program from the computer

If you're running the program from a shortcut on the computer, verify that the program is still on the computer. In some cases if the program is no longer installed on the computer you may get this error.

If the hard drive is corrupted or bad it can also cause working programs to fail either because not all the data can be read from the hard drive or because the program has become corrupted while on the drive. Run scandisk and defrag on the hard drive to check for any potential errors.

Long file name issue

Make sure the program or file you're attempting to run does not contain the same name as the long file name directory it is contained in. For example, executing a file named "program" in the "program files" directory can cause errors in some versions of Windows.

Additionally, if you're attempting to install a program and after the install the program does not work, you may also want to try installing the program in a different directory.

Bad file

Any file can be changed or renamed to be a .exe file. If you're downloading the file, make sure the file is supposed to be a .exe file and that it's not being changed. If you're attempting to create a .exe, file make sure you're compiling the file for Windows and never just rename a file to a .exe file. For example, renaming a .bat file to a .exe file will not make the file an executable file. For a file to become an executable file it needs to either be compiled or converted through a software program designed to convert the file.

File is not designed for your version of Windows

If you're trying to run a program that is not designed for your version of Windows you may get this error. Although many older programs designed to work in older versions of Windows will work with new versions of Windows, unfortunately, not all programs will work.

• If the program is an older MS-DOS program or early Windows program you may get this error.
• If the program is designed for a 64-bit version of Windows and you're running it in a 32-bit version of Windows, it will not work and generate this error.

Getting old MS-DOS games to run in Windows.

File is a virus, worm, or other malware file

This error can be generated by a file that is a virus, worm, Trojan, or other malware file. Often, this will be caused because the virus scanner installed in the computer will not allow the file to be installed or run. Try scanning the file to verify it is not a virus or infected.

If the file has been checked and is clean, it is still possible that the virus protection program or another program installed on the computer is causing issues during the install or execution of the program. Boot the computer into Safe Mode and try running the program; booting the computer into Safe Mode will make sure nothing is running in the background that could be causing this issue.

Hardware incompatibility

If you're getting this error during the installation of a program it's also possible that the CD-ROM drive or the drive you're installing the program from is not compatible with Windows or has drivers that are not compatible with Windows.

Download the latest drivers for your CD drive or other drive through our drivers page.

Renaming Desktop Icons

Click Start, Run and enter REGEDIT. Navigate to the following Registry brach:


HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\CLSID
The Desktop Icons are located in the sub keys as follows:
My Network Places: {208D2C60-3AEA-1069-A2D7-08002B30309D}
My Computer: {20D04FE0-3AEA-1069-A2D8-08002B30309D}
My Documents: {450D8FBA-AD25-11D0-98A8-0800361B1103}
Recycle Bin:{645FF040-5081-101B-9F08-00AA002F954E}
Default IE Icon: {871C5380-42A0-1069-A2EA-08002B30309D}

Double click the Default value in the above keys and enter the text you desire. Right click on the Desktop and select Refresh to see the changes.
To undo the changes, just right click on the Default value and select Delete. Refresh the Desktop to see that things are back to normal.

Windows XP Installation

Chkdsk at the command prompt

1.Click Start, and then Run.
2.In Open, type cmd, and then press ENTER.
3.Use one of the following procedures:

To run Chkdsk in read-only mode, at the command prompt, type chkdsk, and then press ENTER.
To repair errors without scanning the volume for bad sectors, at the command prompt, type chkdskvolume:/f,and then press ENTER.

Note
If one or more of the files on the hard disk are open, you will receive the following message:
Chkdsk cannot run because the volume is in use by another process. Would you like to schedule this volume to be checked the next time the system restarts? (Y/N)Type Y, and then press ENTER to schedule the disk check, and then restart your computer to start the disk check.
To repair errors, locate bad sectors, and recover readable information, at the command prompt, type chkdsk volume:/r, and then press ENTER. Note If one or more of the files on the hard disk are open, you will receive the following message:
Chkdsk cannot run because the volume is in use by another process. Would you like to schedule this volume to be checked the next time the system restarts? (Y/N)Type Y, and then press ENTER to schedule the disk check, and then restart your computer to start the disk check.

How to perform disk error checking in Windows XP

Chkdsk (Chkdsk.exe) is a command-line tool that checks volumes for problems. The tool then tries to repair any that it finds. For example, Chkdsk can repair problems related to bad sectors, lost clusters, cross-linked files, and directory errors. To use Chkdsk, you must log on as an administrator or as a member of the Administrators group.

You can also run Chkdsk from My Computer or from Windows Explorer.

Manual steps to run Chkdsk

Notes :
1.Chkdsk requires exclusive access to a volume when it runs. Therefore, if one or more of the
files are open on the disk that you want to check, Chkdsk displays a prompt asking if you want
schedule the disk check for the next time that you restart your computer.
2.Chkdsk might take a long time to run, depending on the number of files and folders, the size of
the volume, disk performance, and available system resources, such as processor and
memory.
3.Chkdsk might not accurately report information in read-only mode.

How Do I Install Net Meeting

Wondering how to install Netmeeting on Windows XP? Well you don't have to install it! Why? It is already pre-installed with Windows XP, but (by design they say) it isn't linked to anywhere on your programs menu.

Here is how to load it:

1: Click START then RUN

2: Enter "conf" without the quotes

How Do I Install Net Meeting

Wondering how to install Netmeeting on Windows XP? Well you don't have to install it! Why? It is already pre-installed with Windows XP, but (by design they say) it isn't linked to anywhere on your programs menu.
Here is how to load it:
1: Click START then RUN
2: Enter "conf" without the quotes

Reduce Temporary Internet F ile Space

The temporary internet files clutter your hard drive with copies of each page visited. These can build up over time and take up disk space. Even more bothersome is that instead of getting new pages each time IE often takes the page out the temp internet files. This can be a problem if you are viewing a website that is updated all the time. If you are on a slow connection such as a 56K or lower then this can be good but if you are on a fast broadband connection, like me, then you can get away with decreasing the size of your temp internet files to just one meg without any performance decrease.

Launch Internet Explorer.Select the Tools from the menu bar.Then select Internet Options... from the drop down menu.Once the internet options has loaded click on the general tab.Under the temporary internet files section click the settings button.A settings window will load. Slide the slider all the way to the left so the size indicated in the text box on the right is one.Click OKClick Ok

How to Convert a FAT Partition to NTFS

To convert a FAT partition to NTFS, perform the following steps.
Click Start, click Programs, and then click Command Prompt.
In Windows XP, click Start, and then click Run.
At the command prompt, type CONVERT [driveletter]: /FS:NTFS.Convert.exe will attempt to convert the partition to NTFS.

NOTE:

Although the chance of corruption or data loss during the conversion from FAT to NTFS is minimal, it is best to perform a full backup of the data on the drive that it is to be converted prior to executing the convert command. It is also recommended to verify the integrity of the backup before proceeding, as well as to run RDISK and update the emergency repair disk (ERD).

How to Upgrade Windows 98 or Windows Millennium Edition Profiles to Windows XP Domain User Profiles

This guide describes how to upgrade a Microsoft Microsoft Windows 98-based, or Microsoft Windows Millennium Edition-based client that has user profiles to a Microsoft Windows XP-based client.

The following steps enable the Windows 98 and Windows Millennium Edition (Me) profiles to be retained throughout the process.

Your best method to retain the profiles is to join the domain during the upgrade installation process.
Otherwise, you must use a workaround method to transfer the profile information over to the Windows XP profile.

During the upgrade installation process, at the networking section, the administrator is offered the choice to join a domain or a workgroup.
If you join the domain at this juncture, you ensure that all the existing profiles are migrated successfully to the Windows XP-based installation.

If you did not join the computer to the domain during the upgrade process, you must use the following workaround method:

Join the upgraded computer to the target domain.

All applicable users must log on and log off (which generates a profile).

Copy the appropriate Application Data folder from the Windows 95, Windows 98, and Windows Me profiles to the newly created user profiles.

Restricting Logon Access

If you work in a multiuser computing environment, and you have full (administrator level) access to your computer, you might want to restrict unauthorized access to your "sensitive" files under Windows 95/98.
One way is to disable the Cancel button in the Logon dialog box.
Just run Regedit and go to:

HKEY_LOCAL_MACHINE/Network/Logon

Create the "Logon" subkey if it is not present on your machine: highlight the Network key -> right-click in the left hand Regedit pane -> select New -> Key -> name it "Logon" (no quotes) -> press Enter. Then add/modify a DWORD value and call it "MustBeValidated" (don't type the quotes). Double-click it, check the Decimal box and type 1 for value.
Now click the Start button -> Shut Down (Log off UserName) -> Log on as a different user, and you'll notice that the Logon Cancel button has been disabled.