Gigabyte GA-Z97MX-Gaming5
i7-4790K
CoolerMaster Hyper 212 EVO
PC will not boot. At power on, it tries the CD-ROM, but goes no further. Disk activity light flashes during attempted boot, but not afterwards. Never makes it to POST beep. No motherboard logo appears on screen. There is a slow click, about once every two seconds, from the motherboard speaker.
Determined CPU fan is faulty. Disconnected from motherboard. No change.
Removed video card (750ti). No change.
Reset CMOS. No change.
For last two days, would hear alarm from mobo speaker prior to POST. Alarm always stopped at POST. Today, alarm lasted past POST. Figured out that alarm was due to stopped CPU cooler fan. Launched Gigabyte SIV tool and set fans to max, and CPU fan would run.
Troubleshooting steps:
Check BIOS settings. All settings OK.
Uninstall Gigabyte SIV & other tools. System boots. CPU fan runs. No alarms.
Thought maybe Gigabyte s/w somehow became corrupted, so re-installed.
After installation & reboot, no POST, no BIOS, slow clicking from mobo speaker.
I've disconnected the CPU fan from the header. Connected exhaust fan to header and fan runs, so seems the CPU fan header is OK.
I connected the CPU fan to the exhaust fan header and it still does not run, so seemingly confirms that CPU fan is bad. I then disconnected CPU fan & reconnected exhaust fan. CPU cooler fan now disconnected from system (CPU fan header empty).
I reset the CMOS. Had no effect.
Obviously the CPU fan is toast. But shouldn't the system at least POST, especially with the exhaust fan plugged in to the CPU fan header (to simulate a CPU fan)?
Easy enough to replace the CPU fan. Will replace it tomorrow.
But wondering if my motherboard is on its way out too.
Thoughts?
Thanks.
i7-4790K
CoolerMaster Hyper 212 EVO
PC will not boot. At power on, it tries the CD-ROM, but goes no further. Disk activity light flashes during attempted boot, but not afterwards. Never makes it to POST beep. No motherboard logo appears on screen. There is a slow click, about once every two seconds, from the motherboard speaker.
Determined CPU fan is faulty. Disconnected from motherboard. No change.
Removed video card (750ti). No change.
Reset CMOS. No change.
For last two days, would hear alarm from mobo speaker prior to POST. Alarm always stopped at POST. Today, alarm lasted past POST. Figured out that alarm was due to stopped CPU cooler fan. Launched Gigabyte SIV tool and set fans to max, and CPU fan would run.
Troubleshooting steps:
Check BIOS settings. All settings OK.
Uninstall Gigabyte SIV & other tools. System boots. CPU fan runs. No alarms.
Thought maybe Gigabyte s/w somehow became corrupted, so re-installed.
After installation & reboot, no POST, no BIOS, slow clicking from mobo speaker.
I've disconnected the CPU fan from the header. Connected exhaust fan to header and fan runs, so seems the CPU fan header is OK.
I connected the CPU fan to the exhaust fan header and it still does not run, so seemingly confirms that CPU fan is bad. I then disconnected CPU fan & reconnected exhaust fan. CPU cooler fan now disconnected from system (CPU fan header empty).
I reset the CMOS. Had no effect.
Obviously the CPU fan is toast. But shouldn't the system at least POST, especially with the exhaust fan plugged in to the CPU fan header (to simulate a CPU fan)?
Easy enough to replace the CPU fan. Will replace it tomorrow.
But wondering if my motherboard is on its way out too.
Thoughts?
Thanks.
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