Windows Error report says i need to update: (RtkHDAud.sys)

I cannot find this anywhere, nor do i know what it is, please help me out, keep in mind I am completely useless in driver related issues, if that is what it is,

any help will be appreciated

That is a system file that works with your Realtek audio, probably located in C:\WINDOWS\system32\drivers folder. The file may just need to be updated or reinstalled. If you have an integrated/onboard sound adapter, you can probably use the CD that came with your mobo to reinstall the drivers. You could also try renaming the file to something like "RtkHDAud_backup.sys" and see if you get the error.