Hello,
I built this PC a few years ago and it has been running fine, other than a minor issue - during cold boots, everything would start up with fans spinning, then hang briefly and fans would stop (~1 second), then startup would continue normally. Other than that the system ran fine.
Here are the components:
ASUS Z87-Pro Motherboard
Intel i7-4770k CPU (not overclocked, hyperthreading disabled in bios)
G-Skill Ripjaws 8g RAM
Corsair RM750 PSU
EVGA GeForce GTX 760 GPU
Last night, the system crashed and failed to reboot, and I noticed a burning smell from the case. I turned off the power supply and unplugged it, and started checking components, but couldn't isolate the smell.
At the moment, the system fails to POST and I see nothing on the monitors, and the CPU_LED and DRAM_LED are both flashing red, neither is solid. Q Codes cycle through a large number, I wasn't able to capture them all. I've tried pressing the MEMOK button, but it just reboots and continues to the same flashing LEDs. I've followed what I can in this thread: http://www.tomshardware.com/forum/261145-31-perform-steps-posting-post-boot-video-problems, but a lot of it doesn't apply to builds that have worked for multiple years.
Also worth noting is the PSU fan doesn't spin on boot, although all other fans spin and the motherboard seems to be getting some power. I know my PSU has some fanless operating conditions but I thought they would start spinning on boot then stop after checking temp.
The Z87-Pro manual states that the CPU/DRAM LEDs will be solid if there's a problem, and flashing indicates testing, at least for the DRAM. I've tried booting with just 1 stick of RAM in different slots and had no success. However, I had different results using a single stick of RAM from a previous build. In one of the slots (DIMM_B02) and only that slot, the LED flashing is different. CPU_LED flashes once, then DRAM_LED flashes slowly for a few seconds, then CPU_LED flashes once again, then DRAM_LED flashes faster for a few seconds, CPU_LED flashes once again, DRAM_LED flashes fast for a few seconds, CPU_LED flashes one last time, then DRAM_LED is solid red. From the manual I think it's testing timings for the ram and failing, and I'm not sure if the RAM from the previous build is compatible, but this behavior only happens in one slot.
I would really appreciate any help possible isolating which component is causing trouble.
I built this PC a few years ago and it has been running fine, other than a minor issue - during cold boots, everything would start up with fans spinning, then hang briefly and fans would stop (~1 second), then startup would continue normally. Other than that the system ran fine.
Here are the components:
ASUS Z87-Pro Motherboard
Intel i7-4770k CPU (not overclocked, hyperthreading disabled in bios)
G-Skill Ripjaws 8g RAM
Corsair RM750 PSU
EVGA GeForce GTX 760 GPU
Last night, the system crashed and failed to reboot, and I noticed a burning smell from the case. I turned off the power supply and unplugged it, and started checking components, but couldn't isolate the smell.
At the moment, the system fails to POST and I see nothing on the monitors, and the CPU_LED and DRAM_LED are both flashing red, neither is solid. Q Codes cycle through a large number, I wasn't able to capture them all. I've tried pressing the MEMOK button, but it just reboots and continues to the same flashing LEDs. I've followed what I can in this thread: http://www.tomshardware.com/forum/261145-31-perform-steps-posting-post-boot-video-problems, but a lot of it doesn't apply to builds that have worked for multiple years.
Also worth noting is the PSU fan doesn't spin on boot, although all other fans spin and the motherboard seems to be getting some power. I know my PSU has some fanless operating conditions but I thought they would start spinning on boot then stop after checking temp.
The Z87-Pro manual states that the CPU/DRAM LEDs will be solid if there's a problem, and flashing indicates testing, at least for the DRAM. I've tried booting with just 1 stick of RAM in different slots and had no success. However, I had different results using a single stick of RAM from a previous build. In one of the slots (DIMM_B02) and only that slot, the LED flashing is different. CPU_LED flashes once, then DRAM_LED flashes slowly for a few seconds, then CPU_LED flashes once again, then DRAM_LED flashes faster for a few seconds, CPU_LED flashes once again, DRAM_LED flashes fast for a few seconds, CPU_LED flashes one last time, then DRAM_LED is solid red. From the manual I think it's testing timings for the ram and failing, and I'm not sure if the RAM from the previous build is compatible, but this behavior only happens in one slot.
I would really appreciate any help possible isolating which component is causing trouble.
Facebook
Twitter
Instagram