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Cpu and Dram red lights |
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Xaltar ![]() Moderator Group ![]() ![]() Joined: 16 May 2015 Location: Europe Status: Offline Points: 24008 |
![]() ![]() ![]() ![]() ![]() Posted: 14 Jul 2024 at 5:09am |
A voltmeter is not going to tell you everything you need to know about a PSU. If
the 12v rail is rippling too much the board will not allow POST for example. I have often had PSUs test out fine on the bench with a multimeter but still not function correctly in a system. Be it load causing droop or ripple (fluctuation) or even over/under amperage. The only way to rule out a PSU as faulty is to test with another, known good PSU or testing it with an oscilloscope for load droop and ripple. In my experience, it's almost never the motherboard unless there was a dead short somewhere or a blown capacitor etc. In other words, usually, when the motherboard goes there are obvious signs. Going out with a whimper is usually the PSUs M.O. Hope this helps. |
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Eerie_Von ![]() Newbie ![]() ![]() Joined: 13 Jul 2024 Location: United States Status: Offline Points: 65 |
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Checked the power supply and I am getting correct voltage from all the pins. Looks like it is my mobo...
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Eerie_Von ![]() Newbie ![]() ![]() Joined: 13 Jul 2024 Location: United States Status: Offline Points: 65 |
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...those ?? Shouldn't have been there...pay them no mind.
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Eerie_Von ![]() Newbie ![]() ![]() Joined: 13 Jul 2024 Location: United States Status: Offline Points: 65 |
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I'll check the power supply. The system is fairly new, built in April of this year. So I was hoping that wouldn't be an issue. But that appears to be my next step.
Appreciate the reply. ?? |
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Xaltar ![]() Moderator Group ![]() ![]() Joined: 16 May 2015 Location: Europe Status: Offline Points: 24008 |
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Solid RAM and CPU being on could mean either a dead CPU or, more likely, a dead
power supply. If the 12v provided by the PSU is too low or is drooping too much when loaded the lights will remain lit to indicate the CPU was unable to initialize. |
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Eerie_Von ![]() Newbie ![]() ![]() Joined: 13 Jul 2024 Location: United States Status: Offline Points: 65 |
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So like the subject says I'm getting two red solid lights on cpu and dram. This started when I went to restart the system because the mouse pointer had vanished. Once I did then this problem started. I've tried re-seating every component, clearing the cmos, and booting with minimal hardware, but still same issue. When I power the rig on all the fans come on, like everything is getting power. So I don't know if this a power supply or mobo problem...or something simple that I've missed.
Any help would be great. I've got a B550 phantom, with Ryzen 5 5600, and corsair vengeance ram. |
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