I scan my computer with ad-aware and it shows critical objects that should be removed but when i go to remove them this comes up "some objects could not be removed, try closing all open browser windows prior to the removal, if this does not help reboot & run ad-adware again" i tried both steps and i still get the message. What's wrong

Thanks

Some problems require that you reboot the computer.

i did reboot, it didn't work

Try using Windows Defender .