  We propose a three-stage model with Blandford-Znajek (BZ) and hyperaccretion
process to interpret the recent observations of early afterglows of Gamma-Ray
Bursts (GRBs). In the first stage, the prompt GRB is powered by a rotating
black hole (BH) invoking the BZ process. The second stage is a quiet stage, in
which the BZ process is shut off, and the accretion onto the BH is depressed by
the torque exerted by the magnetic coupling (MC) process. Part of the
rotational energy transported by the MC process from the BH is stored in the
disk as magnetic energy. In the third stage, the MC process is shut off when
the magnetic energy in the disk accumulates and triggers the magnetic
instability. At this moment, the hyperaccretion process may onset, and the jet
launched in this restarted central engine generates the observed X-ray flares.
This model can account for energies and timescales of GRBs with X-ray flares
observed in early afterglows.
