Allan you are correct. It is not an essential windows program, RTHDCPL.EXE file is from Realtek sound cards, it's their HD audio file manager and control panel, hardly essential and can be launched manually anytime a user needs it. The actual hard drive location and folder SHOULD be in your windows folder or system32 folder. (system32\RTHDCPL.EXE or windows\RTHDCPL.EXE)
Likely a false positive from AVG, IMO >>>> UNLESS it's in a location other than your windows folder, IMO.<<<<
You can always upload the file to VirusTotal
(or similar) for a second opinion & peace of mind.
FWIW, on my Win 7 x64 system the file is ravcpl64.exe and I have disabled it with Autoruns.
EDIT TO ADD: @petewills: I posted the above information ONLY to supply more information
which I feel addresses the OP's question: >> When I looked this up on google I see its a program that windows requires
?<< I also NEVER suggested to the OP to ignore the AVG warning, but to double check it by uploading to VirusTotal, and also to IMPORTANT>>>
check the location of the file<<<IMPORTANT
--"Likely a false positive..... UNLESS it's in a location other than your windows folder, <<<<
I never suggested that you were "incorrect", nor was/is it my intention to EVER offend anyone @BC--- my only intentions were/are to supply more info to the OP.
Edited by Union_Thug, 03 June 2011 - 03:53 PM.