Can not install software after deleting it in regedit

Hi Expert
I tried to delete a software completely in regedit. After that, I cannot install this software. when I clicked the software to try to install, I got error message. Please see the picture.
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eemoonAsked:
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Scott CSenior Systems EnginerCommented:
What software are you trying to install?

What OS are you trying to install it on?

Why did you delete from the registry rather than do a normal install?

We need more information in order to help you.
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Mark GalvinManaging Director / Principal ConsultantCommented:
Did you restart PC after removing from registry??
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eemoonAuthor Commented:
Thanks for your fast reply. Yes, i restarted it. The following are answers

What software are you trying to install? dm-launcher

What OS are you trying to install it on? win7

Why did you delete from the registry rather than do a normal install? i need to delete it completely

The below link is what i tried. but it did not work
http://answers.microsoft.com/en-us/windows/forum/windows_7-windows_programs/the-configuration-data-for-this-product-is-corrupt/57ba4fec-593a-4430-929e-94ca5ab7faca
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Jessica WhitleySoftware DeveloperCommented:
Okay so after removing the software from the registry did you by chance defragment  your hard drive? Whenever you move a file or remove software you leave a trail or pieces of it. The way you removed the software wasn't exactly the safest way to uninstall in the first place so defragmenting would be a good step even after a restart.
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Michael FowlerSolutions ConsultantCommented:
There may be other registry settings left behind. Try installing CCleaner and running the Registry Cleaner
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Michael-BestCommented:
CCleaner was my favorite when on XP OS, but do not use it on any any newer OS's

use:
lockhunter

http://lockhunter.com/
or

unlocker:

 http://unlocker.en.softonic.com/
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JustInCaseCommented:
Few thoughts:
I use two programs for registry cleaning (CCleaner and FreeWidowRegistryRepair). CCleaner is not great  app for registry cleaning, but it does not corrupt anything (not since version 2.xxx), at least that I noticed. Free registry repair is much better, and did not corrupt registry or destroyed something, again - at least not that I noticed (but it also create automatic backup of registry changes)...
So, I would suggest you to try those...

Other recommendations would be...
Go and manually purge files from Temp folders on locations
C:\Users\<profile name>\AppData\Local\Temp
C:\Windows\Temp
And check for traces (and delete files and folders if you find some) of that specific app in
C:\ProgramData\
C:\Program Files (x86)\
C:\Program Files\
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nobusCommented:
try a system restore to a date it was ok before

and remember - before playing with the registry  - make a backup of it
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