imac 27寸 5k 2017款最近老是自动重启

imac 27寸 5k 2017款最近老是用着用着自动重启，看了日志全是报的-128 到底是什么问题啊

2026-04-12 12:02:03.678730+0800 0xb0 Default 0x0 0 0 kernel: (AppleSMC) Previous shutdown cause: 0

2026-04-12 14:31:20.669162+0800 0xb0 Default 0x0 0 0 kernel: (AppleSMC) Previous shutdown cause: 0

2026-04-12 15:17:58.634104+0800 0xb0 Default 0x0 0 0 kernel: (AppleSMC) Previous shutdown cause: 0

2026-04-12 16:43:39.628791+0800 0xb0 Default 0x0 0 0 kernel: (AppleSMC) Previous shutdown cause: 0

2026-04-13 08:24:39.636705+0800 0xb0 Default 0x0 0 0 kernel: (AppleSMC) Previous shutdown cause: 5

2026-04-13 13:42:11.621041+0800 0xb0 Default 0x0 0 0 kernel: (AppleSMC) Previous shutdown cause: -128

2026-04-13 22:55:46.647419+0800 0xb0 Default 0x0 0 0 kernel: (AppleSMC) Previous shutdown cause: -128

2026-04-15 06:58:15.670229+0800 0xb0 Default 0x0 0 0 kernel: (AppleSMC) Previous shutdown cause: -128

2026-04-15 07:33:49.632744+0800 0xb0 Default 0x0 0 0 kernel: (AppleSMC) Previous shutdown cause: -128

2026-04-15 07:52:11.659562+0800 0xb0 Default 0x0 0 0 kernel: (AppleSMC) Previous shutdown cause: -128

2026-04-15 07:55:55.659160+0800 0xb0 Default 0x0 0 0 kernel: (AppleSMC) Previous shutdown cause: -128

2026-04-15 08:05:31.604458+0800 0xb0 Default 0x0 0 0 kernel: (AppleSMC) Previous shutdown cause: -128

2026-04-15 08:13:20.660427+0800 0xb0 Default 0x0 0 0 kernel: (AppleSMC) Previous shutdown cause: -128

2026-04-15 09:59:12.636913+0800 0xb0 Default 0x0 0 0 kernel: (AppleSMC) Previous shutdown cause: -128