I just want to delete these bad mp3S installed on my computer by trustedinstaller.

Hi, Thanks for posting! You have to first take ownership of the files or folders and then grant yourself full control permissions and rights! 1. First, go to the folder or set of files that you need to change permissions for, right-click on them and choose Properties. 2.click on the Security tab and then click on the Advanced button at the bottom 3.click on the Owner tab and you’ll now see that the current owner is TrustedInstaller 4.Now click on the Edit button and choose who you would like to change the owner to, either your account or the Administrators. If your account is an Administrator account, I would suggest just picking Administrators. 5. You can also check off Replace owner on subcontainers and objects if you need to delete more than one file in a folder. Go ahead and click OK. Now you will see that the Current owner is the account you picked. 6.Click OK until you have closed all properties windows and are back to the Windows Explorer screen. Then right-click on the folder or file again and choose Properties again. 7. Now click on the Security tab again, but instead of clicking on Advanced, you need to click the Edit button. 8.Now click on the user name in the list that you want to change the permissions for, which should be the same as who you changed the current owner too. If the user name is not in the list, click Add, type in the name and click OK. 9.If you changed the current owner to Administrators, I clicked on Administrators here and then clicked on the check box next to Full Control. When you do that, all the other boxes get checked too. 10.Click OK once and then click OK one more time to get back to Windows Explorer. Now you can delete those files Regards,Please remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.