Member Avatar for Vradash

Hi,
when i change Color-depth in Windows98 to 32-bit, i get a rundll32 error.
I use Win98 Second Edition,Ati Radeon 9600 Pro,Ati Catalyst 4.10.
My board: Asrock K7VT2 ( i know,it´s crap :o )
Please help!

Greets,
Vradash

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reported a rundll32 error that appears when the desktop changes color depth; rightly asked for the exact error text because the DLL or module name shown by the dialog is the single best clue to the failing component. The following explains the typical causes and practical diagnostics for a Win9x-era system where a display mode change triggers a rundll32 crash.

Common diagnostic steps:

  • Boot into Safe Mode or VGA mode so the desktop loads without the accelerated driver and the error stops.
  • Uninstall the display driver and any vendor display utilities while in Safe/VGA mode, then reinstall a driver explicitly built for the OS (not an XP driver).
  • Make sure the system has the DirectX and chipset/AGP support files the display driver expects; missing prerequisites often cause runtime failures during mode changes.
  • Check startup/run registry keys and shell-extension entries for rundll32 calls or third-party DLLs; if the error names a DLL, remove or replace that component. Back up the registry before edits.

Additional checks and cautions: run the built‑in registry backup/repair (scanreg) to repair obvious registry corruption. If rundll32.exe itself seems suspect, restore it from original installation media rather than downloading random copies. If the problem persists after a clean driver install, try an older/stable driver build for the card or test the card in another machine to isolate hardware vs OS/driver causes. Always back up important data and create a registry backup before making changes that could affect startup.

Providing the full error text (exact spelling and any quoted module name), the OS build, and the driver package/version used will narrow diagnosis quickly — that detail is what points to the exact offending DLL.

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Member Avatar for DMR

Can you give us the full and exact text of the error message please?

Member Avatar for Vradash

Umm...i changed agaim to XP but i want to use Win98.
The message is something about uhhh... RUNDLL32occures an error in module <unknown> or something like that.

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