How can I remove "client.exe" error - Windows 7 Pro

1. A few months ago I downloaded some freeware.  The freeware had malware that caused some immediate problems (locked up my browser (Firefox) and redirected my home page.
2. I deleted the freeware and fixed my browser.
3. I am left with an annoying error (Windows cannot find 'C:\Program Files (x86)\user extensions\client.exe.  Make sure you typed the name correctly then try again'.  See attached screenshot.  The error pops up every time I boot my PC.  I can close it by clicking 'OK' on the error message.  The error continues to pop up at what seems to be random intervals when I am using the PC.  The error doesn't seem to be causing any performance problems.  It's just annoying.
4. I have searched my hard drive and registry for the string .... client.exe, downloaded installed and run the Autoruns tool.   So far I have not been able to find and delete the source of the error.

Any suggestions?
Screenshot-2015-10-15-06.59.06.png
WanJoAsked:
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Dave BaldwinFixer of ProblemsCommented:
From your screenshot, it looks like you be looking for 'taskeng.exe' and getting rid of it.  It looks like 'taskeng.exe' is trying to load 'client.exe'.
Muhammad BurhanManager I.T.Commented:
don't remember specific website but the steps are the same which we followed in past for same issue as yours.

http://malwaretips.com/blogs/remove-search-extensions-client-exe-popup/

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Ganesh Kumar ASr Infrastructure SpecialistCommented:
Try using msconfig and check the load on the startup, remove the tasks started at the boot time. Reboot and check if you dont get error. Then remove the folder from the windows path mentioned in the error.
nobusCommented:
do a system restore to a date before the malware happened
WanJoAuthor Commented:
The steps documented in the error removal guide worked perfect.  Thanks!
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Windows 7

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