Is Reg Sweep Safe? Read Our RegSweep Review. We recommend you grab the free download before you purchase & try it out. Registry repair programs go in to the guts of your pc & scan automatically for errors & obsolete programs & settings that are slowing down the operation of your surface programs. Once you do a registry sweep & repair, your pc will be running fast again, as it did when you first purchased it. Just make sure that you back up al of your data so that if you need to do a system restore, you will function properly.