Pentium 4, 5 volt rail indicates low Tags: CPUs Pentium HD Last response: February 3, 2013 3:51 PM in CPUs Share rgieitz February 3, 2013 2:10:03 PM 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 More about : pentium volt rail low twelve25 a b à CPUs February 3, 2013 3:51:39 PM 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. Can't find your answer ? Ask ! Publish Related resources 10.30v on +12 volt rail Forum 12 volt rail seems weak? Forum Help With A Low 3.3 Volt Rail Forum PSU w/ 18A on 12V rail for GTX 650? Forum Low 12 volt rail Forum Asus Probe Giving Alerts on 5 Volt Rail Forum Stupid question about 12 volt rails. Forum PSU no - 5 volt rail , question Forum Low voltage on 12v rail Forum Radeon HD 5770 on 25 amp. on 12 volt rail ? Forum i have 2 ,12 volt rails do the amps combine or can i combine them? Forum +12 Volt Amp Rail Confusion Forum +12 Volt Rail Amp Rating Forum Single rail dual rail question? Forum antec 550w w/ LOW + 5 v rail Forum FX-6200 vs FX-6300? Forum More resources Read discussions in other CPUs categories AMD Intel Intel i5 Intel i7 Phenom Cooling Performance !