I get the same pop up dialog box on boot up, I'm running Win98SE. This just started a couple weeks ago, after I closed down too many programs too fast or something. I'll try the above suggestions. I did research and heard there's a virus around that deletes this file? I ran a full scan, nothing. If I close the error dialog box after boot up and go online, everything seems ok. Not sure if psapi.dll is a "necessary" file in 98SE/ME? Thanks for this topic.

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I am running windows 98 se on a compaq presario 7471.I too have a battle with the PSAPI.dll error on bootup. Next I receive an error "installation failed". I close the windows and my computer runs. It seems to lock up more often now. I just battled the "C:\windows\IEdll.exe file appears to be corrupt. Reinstall the file and then try again" error and learned that most people with the same problem also end up with a "loader.exe file missing" error. What do LOADER.exe, IE.dll, and PSAPI.dll have in common?

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just did some more research, and a bit of stressful "cleaning"... It appears that any kind of "loader.exe" is a gateway program for one or more types of new trojan virus, maybe. It boots up with windows, and makes things a mess. I also found out that psapi.dll is primarily used on Windows NT, and so those of us with Win98 get the error box, as the virus program searches to hit all possible window systems. What I did is update my virus list, switch the computer to "safe mode", and then run a full virus scan. This is the obvious one..delete anything that's wrong! The tricky (for me, Mr. Panic) part is that you now need to go into the registry from safe mode. Click start, click run, type regedit, that's the registry editor. The main area that this stuff seems to be in is the key HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run ..check all the folder with "run" in them, and delete any "loader.exe" files and the like. Don't delete the "empty" ab files. Also check your antivirus company's latest updates for other things to take out of the registry! Good luck to anyone dealing with this. Just don't panic, it's just a box of wires and chips.

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I have been receiving the message that a required DLL file PSAPI.DLL was not found. Please restore the file to my system

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do I delete the loader program from my windows directory as well? thanks for the useful thread Win 98 Cheers stu

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I'm having the same problem as everyone else, except the "PSAPU.dll file" box is also switching my homepage from Google to Search.net. I've followed the steps listed in #11, and the pop-up error box that was appearing after booting up is gone, but it's still switching my homepage. Any ideas how to eradicate this?

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I am also receive the PSAPI.dll error when my pc is booting up. However, I am running Windows 95. Should I follow the steps that psylobop outline? Any assistance that will help me resolve this will be very appreciated. Thanks

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Hey, I'm running Windows ME, and it seems like most of you have 98 or NT...however, I'm getting an error message: PSAPI.DLL was not found and so on, like everyone else. Obviously, this problem is not exclusive to my program or anyone else's, and though I've gone through a number of forums, I can't get a handle on what is causing this problem. I know the file is gone, is there a place I can download that file? Are there certain things I need to do to prevent this from happening? My computer is slower, things not opening quickly, and (while many of you have more) I have 319 megs and should not have any performance problems. I've read about another .exe file that leaves the computer open to Trojan viruses; these I know are dangerous and can corrupt a lot of things. If anyone has a complete, step-by-step process I should go through, especially for semi-literates like me, I would greatly appreciate it. I do know that we have to renew our virus protection subscription, which has been quite outdated. We had McAfee, is there a certain brand/model that is best? Thanks for any consideration and posts! Tim

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