Winmm.dll is not a valid Windows image message
Question:My PC gives this message "The application of DLL C:\Windows\system32\winmm.dll is not a valid Windows image. Please check this against your installation diskette." This is a Packard Bell PC. I can open up applications but they will not do anything.
Answer: It sounds like you have a corrupt winmm.dll system file. I would first try the Windows System File checker
to see if it can find and replace the corrupt file. You most likely
will need to have your Windows CD handy in case it asks for it so
hopefully you have a copy.
Another option is to replace the winmm.dll file from
another computer or find a copy of it online. Just make sure it's from
the same version of Windows if you take it from another computer just in
case it varies between versions which it may not. Then you can copy the
file to the System32 directory and reboot your computer. You may want
to backup the old copy or rename it winmm.old just in case you need to
revert back to it. Do this before copying the new file to your computer.
If it doesn't help after the reboot then try to re-register the phone
by clicking on Start and then Run. Then type cmd and press Enter. Finally in the command box type regsvr32 winmm.dll and press Enter.
