PSAPI.DLL Start up Error

I have been searching the web and Microsoft.com for help with this issue, I have found similar .dll errors only this one doesn't have the "w" after file name and I'm not sure the fix would be the same, he does not have Verizon, etc. All the fixes I've found so far seem to pertain to a Smart Bridgeconfused related to a program or hardware, etc., it's very confusing to me I am by no means computer saavy but I've been trying to help a friend resolve this issue on his computer. At start up he gets the following error: Procedure entry point get process image file name could not be located in the dynamic library PSAPI.DLL
I have found fixes that say all the PSAPI.DLL files should just be renamed, only the PSAPI.DLL files in System32 should be used, then another says to replace the .DLL files with new ones, some say it's an issue with Internet Explorer 7 Beta's (I'm not sure if he installed the beta or not, have to ask him) and to just get rid of it and use a different browser such as Firefox but I have both browsers myself and have found there are a few disadvantages of Firefox particularly on certain web sites it will not work even with my Agent Switcher and I need to use IE to open them, so he really doesn't want to just get rid of IE 7 if at all possible he would like to try and fix it. I am so confused as to what he should try to do to fix this error!?? Does anyone know a way to fix this?? PLEASE HELP!!