This is often due to a faulty hard disk. It may help to check whether the hard disk is old and in need of replacement, or to move the system to a cooler environment.
Sebba n wayagi di tegti d aḍebsi aquran ixesren. Iwakken ad tefruḍ ugur-agi senqed ma yella aḍebsi aquran d aqbur u yesra ad yettwabeddel, neɣ ad tesmuttiḍ anagraw ɣer twennaḍt isemḍen ugar.