![]() ![]() Including the main 24-pin ATX motherboard power connector! And companies other than Molex also make the connector you know as a "Molex connector", notably AMP but also many unbranded/generic ones are also available. Still, it is good to check the cheap and easy stuff first."Molex connector" is actually a rather imprecise term, since the Molex company makes many, many different connectors. It could be a fan finally getting started, but the quoted bit really seems like a PSU. The repeated start-shut off-start cycle could be it overheating, but at some point it begins working again. I was thinking Wallace said that the PC would sometimes refuse to start in that way for 45 minutes after having one of the failures. That PSU turned out to have a bunch of bulging electrolytic capacitors in it, and when I replaced it, everything worked fine.Īfter a reread, I realize I misread the original post. ![]() Sometimes it would work, and sometimes I would have to try again, letting it wait a little bit longer. ![]() I had to turn off the switch on the PSU, let it rest a bit, then try turning it back on. Simply pressing the ON button on the case did nothing. I had a PSU a few years ago behave very similarly. If the PSU does not send a power_good signal to the motherboard after being powered on, it won’t begin POST or try to boot even if it is receiving power. Turning off the power switch on the PSU would not have any effect on an overheated CPU, but a PSU that was malfunctioning would quite possibly require power to be cut for a brief time before it would boot again. If I turn off the electricity on the back of the power supply, turn it back on, let it rest for a while, then it will restart, maybe. It may not run for long, but at least it would start normally. Regardless of that, though, once the power is off, it just takes a few seconds for a really hot CPU to passively cool enough to restart. I don’t remember seeing throttling on those older units, but it’s been a while. If that was not enough to cool it, it would then turn itself off.Ī CPU as old as the OP’s, though, may not throttle, or it may be controlled by the BIOS. It would be a good idea to check for overheating before installing the thing and making it nonreturnable (if it is returnable at all).Īn overheating CPU on a newer CPU would thermal throttle almost to a stop to keep from overheating. It could be heat, and you are right, it would be good to check it before spending money… but Wallace had already ordered the new PSU before he posted. IS THIS GOING TO WORK? Will this all plug together and work properly? QUESTION: The new version of Antec ‘Green’ 500D has two 4-pin 12v connectors, which seem to be intended for the motherboard’s ATX 8 pin connector, labeled 8-pin EATX12V in the motherboard manual. My diagnosis: After 12 years of service the power supply is near death. One evening it took 45 minutes of this before it would stay up and let me see email again. Sometimes it just about boots up, and then I open Outlook, and it dies again. Suddenly black screen, case lights go out, fans stop. I have experienced the machine dropping dead in the middle of activity several times in the past 6 weeks or so. ASUS M4a89 Series motherboard, AMD X2 processor, 16 Gb memory, Kingston SA400 480 GB SSD hard drive. I have a computer that I build in Dec, 2010 which runs email software very nicely for me, so I am trying to keep it alive. ![]()
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