Upon booting computer, the message : The application or DLL C:\windows\system 32\tl20hafi.dll is not a valid Windows image. This pops up basically everytime I try to initiate a different program. Wondering if there is a simple way to fix? Microsoft Security is in place and has performed scans which do not indicated any virus.

Hi posey2962,Did you make any software or hardware changes on your machine prior to this issue?You may configure the computer in clean boot and then check if the issue persists. It will start Windows XP by using a minimal set of drivers and startup programs and helps to eliminate software conflicts. The following link has steps showing how to perform clean boot: http://support.microsoft.com/kb/310353Note: Please ensure that the computer is set to start as usual by following the section ‘Steps to configure Windows to use a Normal startup state’ from the article: How to configure Windows XP to start in a "clean boot" state: http://support.microsoft.com/kb/310353Hope the information helps. Please post back and let us know.RegardsDebleena SMicrosoft Answers Support EngineerVisit our Microsoft Answers Feedback Forum and let us know what you think.