Pentium 4, 5 volt rail indicates low

Intel Pentium 4 mothrbard diagnostics indicate 5 volt rail is 2.86 volts. Digital volt meter on HD connector indicates correct 4.96 volts. MB CPU overheats and shuts down. At a loss on this. //RICH SENDS
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More about pentium volt rail
  1. It's a P4. Likely that the power supply is ancient as well and failing or that the MB is no longer passing power through properly. This stuff happens after 7+ years.
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