4
I recently build a new system with the following specs:
CPU: i7-7700, PSU: evga 550 g3, MB: msi-z270-a-pro, RAM: cosair vengeance 4x4 gb, SSD: Intel 600p m2 , (no graphics card at the moment)
The problem: Whenever I turn on the PSU by using the on/off switch on the back of the PSU, the CPU-fan and the rest of the case-coolers starts to spin. At the same time the CPU debug-led on my motherboard lights up (notice there are four debug-leds - CPU, dram, VGA and boot - and only the CPU-light is on).
Details: I can perfectly fine boot into windows by using the case on/off switch, but when I turn off the PC, the fans keep spinning and the debug-led lights up again (the debug-led on the motherboard turns off, when I turn on the PC). The only way I can make the fans stop spinning is by turning off the PSU, thus removing the power. The PC recognizes both the ram and the CPU.
What I have tried so far:
- I have tried running my system with an older PSU (corsair 700w gs). When I do this, everything is running fine - the fans stop spinning, when I turn off my PC. Also the CPU debug-led is off.
- I have tried using the new PSU on an older system with an Asus P8Z68-V motherboard. Everything works fine and there are no problems.
- No pins on the CPU socket are broken.
- I have checked that all connections are properly connected - especially the front case-connectors, including the case-switch.
- I have updated bios and all drivers (even though it seems like it is not a software problem)
- (i do not have a case speaker at the moment, so I can’t hear any beeps, but i am looking to get one as soon as possibly)
- I have tested the ram sticks and there does not seem to be a problem with the ram - also, the PC boots fine.
- I have tried various settings in the bios.
- I have tried resetting the CMOS.
- Problem persists when I try to shut down in safe mode.
I think it is very weird, as both the PSU and the motherboard functions fine in other setups. Based on my testing it seems like the motherboard (msi-z270-a-pro) or the power supply (evga g3 550) are causing the problem.
Does anyone know a solution to this problem? Does anyone know how I can further test my system and figure out what part is malfunctioning?
It's likely not going into the right sleep state when you're shutting down - it's normally a bios option. – djsmiley2k TMW – 2017-02-19T21:14:04.793
But then why would the system work with a different psu? I feel like i have tried every bios setting, but i cant find any regarding sleep states. The only ACPI settings in bios are regarding power led. What should i look for? – john – 2017-02-19T21:19:07.553
I've only ever seen it listed as sleep state, S1, S2, S3, S4... – djsmiley2k TMW – 2017-02-19T21:20:37.640
Have you already checked to see if a firmware BIOS update was available for the make and model of the MOBO? – Pimp Juice IT – 2017-02-19T21:23:52.703
@Walmart Yes. There are no new BIOS updates, but i tried to reinstall the BIOS with the same version. Unfortunately it did not solve the problem. – john – 2017-02-19T21:35:33.937