Strange startup actions observed. Device behaves unexpectedly when powered on.
Strange startup actions observed. Device behaves unexpectedly when powered on.
The machine needs a long time to boot up after being unplugged. If I try to power it before enough time elapses, the cooling parts will spin and sometimes the case fan or connected motherboard fan will too. There’s some power available for USB devices, but the mouse lights probably won’t work. The monitor doesn’t get any signal (no iGPU or i5 4570). I can turn it on right away after turning it off, for example if it was off for a minute. I tried this and nothing appeared on the screen and the fan didn’t spin. After turning it off with the power strip and back on within seconds, it started automatically without me pressing any buttons. I suspect this might be a PSU or motherboard problem.
Hey there, it seems like the power supply or the motherboard's power system might be the issue. Do you have a different or updated PSU you could try?
` Thanks for the response. Actually I do, but it's hooked up and it's a pain in the ass to remove the CPU Power cable. I guess it's the only option for now. I though that maybe a PC shouldn't power up itself up after being completely off for 3 seconds and it's some know problem with PSU capacitors that leak too much power and computer won't completely shut off or something like that, but I don't know anything about electronics. Btw. it's 9 years old Corsair CX500M
Don't worry, friend. It's a bit of a headache, but I suggest giving that alternative PSU a shot. That’s the most reliable approach. If it still doesn’t work and things keep acting up, you’re likely stuck unless you have another motherboard, CPU, and RAM that match the old specs to swap around and pinpoint the issue. My take is the PSU is probably failing due to a bad CPU, RAM, or motherboard. You might want to pop it open for a visual check—damaged capacitors often look swollen or leaking.
Updated. Connected a fresh PSU and everything seems to function properly (though using a power strip still allows testing the PC restart before 3 seconds). I plan to purchase another one. I also took apart the faulty unit and it appears all caps are intact. The only odd part is a random PSU image from Google showing a large component wrapped in green film. My unit looks similar but has two wires and is wrapped three times. There’s some dark brown goo resembling old grease (possibly just glue), though there’s also white glue used elsewhere in my PSU.
I come from Poland and I'm using Endorfy Vero L5 500W (the Polish brand, or the original Polish model before it was rebranded). They claim their Teapo condensators are solid, so I'm hoping they perform well and include protections like OVP, UVP, OCP, SCP, OPP, and SIP. The price is 62 USD, which feels like a solid deal since most components are a bit cheaper. Also, I'm replacing this PSU because if anything goes wrong with the current build, I'll need to start over with a new APU and PSU.
It looks like a solid offer then unless there are no used items available on eBay for lower prices. As someone from the UK, I’m unfamiliar with Endorfy.
They offer excellent air coolers such as Fera 5 and Fortis 5 at a reasonable price on Amazon UK (38 £ in Poland) along with some PSUs. These cases are popular, though quality varies. Also, this PSU includes a DC-DC Converter, which is uncommon at this price point. Someone noted that under 100% GPU load, the 12V output drops to 11.98V—great performance.