Atapi.sys is actually "invisible" system file in Windows that you can see in the path "C:WindowsSystem32drivers." It poses no serious threat to your pc as such, and is actually usually highly essential to the operations of pc. Window's storage system in particular is for you to use this file extensively. However malware infections since the rootkit virus acknowledged to cause errors within the Atapi file, which consequently can cause disruptions inside your system. This end up being caused