registry problems

For about a year or so and with an always updated CCleaner I find in the Registry-cleaner these three data in Application Paths:

C:\Windows\System32\igfxEM.exe

C:\Windows\System32\igfxHK.exe

C:\Windows\System32\igfxTray.exe

I delete them, but next time I use the registry-cleaner, they are there again.

Any explanation?

They're needed for intel embedded graphics, windows is doing it's job by recreating them. Please read my signature below this post for good rules to follow when using the registry tool