Moved mobo CPU into new case - high fan speed

keymoo · 17 Aug 2017 at 20:18

I've just moved my mobo, CPU, RAM to a new case. I've reinstalled Windows as I have a new drive as well. When the PC boots up the CPU fan speed is very high at around 2200 rpm and I can't work out how to slow it down.

Things I've done:

Reset CMOS
Checked CPU temp - at 25C!
Check CPU fan speed setting was set to Normal. Changed it to Silent and it's still fast.

Have I broken something when I moved it? What could it be?

Mobo is GA-Z68MA-D2H-B3 https://www.gigabyte.com/Motherboard/GA-Z68MA-D2H-B3-rev-10#ov

Plec · 17 Aug 2017 at 20:52

Did you clean the fan on the cooler when you moved it - if so how?

*There's a chance that your fan is damaged.

keymoo · 17 Aug 2017 at 21:00

Well I vaccuumed it when I moved it as it was dusty. Yeah you might have a point. Maybe I'll just buy a new fan. I have one of these, can you suggest a replacement fan for it? https://www.overclockers.co.uk/cors...lga775-lga1155-lga1156-lga1366-hs-001-cs.html

It's weird though because the fan spins up quietly and then when the Windows logo appears after POST it spins up to full speed.

Plec · 17 Aug 2017 at 21:07

keymoo said:
Well I vaccuumed it when I moved it as it was dusty. Yeah you might have a point.

Strong possibility especially if it spun the wrong way - or faster than it's recommended RPM.

Will look at link when picked up kids...

Plec · 17 Aug 2017 at 21:45

Your motherboard has PWM fan header - so have done a quick selection. Your present fan spins up to 2000/2200RPM.

All would do the job - selected fans similar to your present fan's max speed (didn't know you temps/clocked) - all PWM and varying budget/performance and relative silence.

My basket at Overclockers UK:

1 x Corsair ML120 Pro 120mm Premium Magnetic Levitation Fan= £19.99
1 x Akasa AK-FN059 120mm Ultra Quiet Venom Viper Cool Fan - 3/4 Pin= £11.99
1 x be quiet! Silent Wings 3 120mm PWM High Speed Fan= £19.99
1 x Noctua NF-F12 IndustrialPPC 2000RPM PWM 120mm High Performance Fan= £21.95
1 x Cryorig QF120 Performance 120mm PWM Fan= £8.99

EDIT: Compare Acoustical Noise (dB) : airflow ratio if that is important.

Plec · 17 Aug 2017 at 22:17

See above:

Didn't notice your edit:

keymoo said:
It's weird though because the fan spins up quietly and then when the Windows logo appears after POST it spins up to full speed.

Did Windows update recently/at the same time (Windows 10)?

Do you have any gigabyte utilities installed - e.g. Easy tune 6?

Could still be fan damage - but i would uninstall Easy Tune (if installed) or any other third party windows fan controlling software to be sure they're not causing an issue.

keymoo · 17 Aug 2017 at 22:59

It's a fresh install of Windows 10. The fan spins up to high speed just before windows starts to boot after POST. I'm wondering if it's more BIOS related than a problem with the fan? I only say that because it does spin quietly during POST.

Plec · 17 Aug 2017 at 23:06

So no third party fan control software?

keymoo said:
I'm wondering if it's more BIOS related than a problem with the fan? I only say that because it does spin quietly during POST.

Could be - as the CMOS reset didn't help you could try updating or, if up to date, re-flashing the BIOS.

However, when you vacuumed the fan - did it spin freely for a considerable amount of time?

keymoo · 17 Aug 2017 at 23:13

Plec said:
So no third party fan control software?

No. Fresh install of Windows, I haven't installed anything yet, it spins up fast before Windows boots anyway.

Plec said:
Could be - as the CMOS reset didn't help you could try updating or, if up to date, re-flashing the BIOS.

Makes me nervous but I'll give it a go as a last resort.

Plec said:
However, when you vacuumed the fan - did it spin freely for a considerable amount of time?

Not really, I just vacuumed the fins and the front for a few seconds, it didn't spin at all I don't think.

Plec · 17 Aug 2017 at 23:22

keymoo said:
Makes me nervous but I'll give it a go as a last resort.

Use the Q Flash utility and a freshly formatted Fat 32 pen drive with latest BIOS file - perfectly safe. (*Just don't use the Windows environment to do it.)

keymoo said:
Not really, I just vacuumed the fins and the front for a few seconds, it didn't spin at all I don't think.

If the fan didn't spin then you haven't damaged it - but still could have become faulty just from being moved. Can't be ruled out i'm afraid just because of symptom.

Cheapest option is to flash the BIOS.

Hit <END> at start of post to enter Q-Flash. Use the prepped pen drive and follow on screen prompts to direct it to the file. (Remember: freshly formatted Fat 32 pen drive and only the BIOS file installed).

keymoo · 17 Aug 2017 at 23:39

OK, I flashed it and it's still the same. Maybe I'll just try a new fan then, although I am sceptical that's the issue. Thanks for the help!

Plec · 17 Aug 2017 at 23:48

keymoo said:
Maybe I'll just try a new fan then, although I am sceptical that's the issue.

Inclined to agree - but needs ruling out. Although, very coincidental that problems started after reseat.

keymoo said:
Thanks for the help!

No worries - here's hoping a fan replacement works...

keymoo · 27 Aug 2017 at 13:15

Plec said:
Inclined to agree - but needs ruling out. Although, very coincidental that problems started after reseat.

No worries - here's hoping a fan replacement works...

It worked! Thanks for the help. I went for the Akasa and it's nice and quiet and spinning at low speed.

Plec · 27 Aug 2017 at 13:19

keymoo said:
It worked! Thanks for the help. I went for the Akasa and it's nice and quiet and spinning at low speed.

Great. Glad it worked out for you.

Thanks for update - helpful.