Wǒ de diànnǎo yòu zài zuòguài le, dǎ bù kāi wénjiàn.
My computer is acting up again, it can't open files.
Tips
usage
作怪 originally meant ghosts or demons causing trouble. In modern use, it commonly describes things malfunctioning (天气作怪, 身体作怪) or people scheming behind the scenes.