Your psu is 6yrs old, and a crappy one too.
Try another psu.
Everest Report
Power Management Properties:
Current Power Source AC Line
Battery Status No Battery
Full Battery Lifetime Unknown
Remaining Battery Lifetime Unknown
Sensor
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Sensor Properties:
Sensor Type Winbond W83697HF (ISA 290h)
Temperatures:
Motherboard 37 °C (99 °F)
CPU 36 °C (97 °F)
WDC WD800BB-00DKA0 42 °C (108 °F)
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Power Management Features:
Automatic Clock Control Supported
Enhanced Halt State (C1E) Not Supported
Enhanced SpeedStep Technology (EIST, ESS) Not Supported
Frequency ID Control Not Supported
LongRun Not Supported
LongRun Table Interface Not Supported
PowerSaver 1.0 Not Supported
PowerSaver 2.0 Not Supported
PowerSaver 3.0 Not Supported
Processor Duty Cycle Control Supported
Software Thermal Control Not Supported
Temperature Sensing Diode Not Supported
Thermal Monitor 1 Supported
Thermal Monitor 2 Not Supported
Thermal Monitoring Not Supported
Thermal Trip Not Supported
Voltage ID Control Not Supporte