My brother is having a problem with getting some things to work on his computer. Every time he tries to go into something on the control panel, it says warning, and says that rundll32 has been lost. Can you help me on how to find or replace it?
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Anita, you should find Rundll32.exe in the Windows folder. Double click My Computer. Click on the tab that says View and choose Folder Options. In that box click on the View tab. Go down the list and check off Show all files. Now close that and go to Start, Find and choose Files and Folders, click it and a search box opens, Type in Rundll.exe in the Named box..make sure it is set to your C: drive in the Look In box and choose OK. That should find it if its on the computer. If it finds it anywhere but the Windows directory cut it and paste it in the Windows directory. If it doesn't find it run setup from your CD again.
Run SFC from \windows\system\sfc.exe and chech for currupted files,then restore rundll32.exe from installation CD.
Hi Anita,

Here's a set of instructions for your brother to follow. Make sure he follows them accurately and doesn't skip any steps.

He should have his Windows 98 CD Rom disk handy.

1.      Reboot the system and either hold the Ctrl key down right after memory post or when you see the “Starting Windows…” dialogue, touch the F8 key.

2.      Choose #5 Command (MSDOS)  Prompt only.

3.      At the dos prompt, change directories to X:\Windows\Command, with “X” being the directory where Windows is installed.

4.      Now type SCANREG/FIX <enter>

5.      Follow the dialogue and let Scanreg review your registry and make any necessary repairs.

6.      When Scanreg is done, reboot into Windows.


1.      Insert your Windows 98 CD Rom disk into the drive.

2.      Click Start, Run and type  SFC <OK>

3.      This will start the System File Checker.

4.      Click on the settings button and select “Check for changed and deleted files” and click OK to start.

5.      Replace any files that are detected as bad or corrupt. Also watch the file dates carefully and always try and replace older files (pre-May 1998) with newer files, and most important, always use the latest version numbers for all files. SFC will copy the old file to X:\Windows\Sysbckup in case you need it back. As an example, version 4.1998.2222 is later (more recent) than 4.1998.1000.

6.      When SFC is done, reboot the system and note the performance.

Let me know how he make out!

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If a drive is a mess, sometimes files can't be found. It would probably be a wise idea to do a Defrag
start/programs/accessories/system tools /Disk Defragmenter.

That should make all disk acess faster, and it can find lost files and restore them; a ScanDisk might turn something up too. You should always defrag before attempting to re-run Setup. It's possible to mess up Windows even worse by trying to run Setup on a highly fragmented disk.

Also, remember the GIGO principle.
Garbage In, Garbage Out: If you give the computer garbage, it's what it will give you as an answer. If a computer is overloaded, files may be very hard to find. How much free space is there on that machine? RAM?


P.S. Dennis- We seem to cross paths so much! I think it's funny how we're both drawn to the same questions. I don't mind, I just think it's funny.
also, it might be an error in the registry.
reboot your system and press F8 until you get a menu...
choose DOS PROMPT, not safe mode... then type this in

this will fix anything wrong in the registry, it will tell you to
restart when its done, then try it.
anita_75972Author Commented:
Thank you so much for your help! I  appreciate it.
You're quite welcome Anita. Just keep us advised of his progress!
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