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| Thread ID: 121252 | 2011-10-18 03:36:00 | What possible reason for CPU fan not starting? | BBCmicro (15761) | Press F1 |
| Post ID | Timestamp | Content | User | ||
| 1238214 | 2011-10-18 03:36:00 | I have a GA-Z68XP-UD3 with i5-2500k (recent Computer Lounge combo). Trying to get it to go. The CPU fan is not spinning and PC Health in the BIOS says 90° It looks too simple to go wrong. I put the 4-pin connector on the fan wires into the plug marked CPU fan...??? |
BBCmicro (15761) | ||
| 1238215 | 2011-10-18 03:51:00 | Is smart fan control turned on in the BIOS, by default it is --- What happens is the fan doesn't start up till the CPU get s hot enough. Scares the crap out of ya when first encountering that :) You can disable Smart fan control, and the fan will run from the start then. |
wainuitech (129) | ||
| 1238216 | 2011-10-18 03:56:00 | I didn't touch fan settings in the BIOS... It's a good idea to disable the control - thanks. I will wait until it cools down a bit (and currently I'm sick of swapping KVM |
BBCmicro (15761) | ||
| 1238217 | 2011-10-18 04:04:00 | Is it an old or a new fan. I.e could it be that it has just worn out over time ? You could try the same fan on a different plug and see if it spins. |
Slingshot (16584) | ||
| 1238218 | 2011-10-18 04:41:00 | The fan came with the new i5-2500k It's 4-pin so I can't test on the other headers |
BBCmicro (15761) | ||
| 1238219 | 2011-10-18 04:51:00 | Hmm, so it's either the software controller, the header/motherboard, or the fan. I guess software is easy to check, beyond that you would have to eliminate the fan/header. If you're feeling adventurous you could get a multimeter across the header pins to check the voltage etc and ensure the header is ok, which would point to the fan, or vice versa |
Slingshot (16584) | ||
| 1238220 | 2011-10-18 05:54:00 | I disabled the control in BIOS as Wainui said but it made no difference. The fan speed is reported as 0 rpm and the warning buzz comes on if I turn the 'Fan stopped' alarm on. I've also tried spinning it by hand (both ways) and re-inserting the connector with power on. So do I ask Computer Lounge for a new HSF? or the CPU-HSF package? or the MB? or the whole 'combo' which includes 8GB RAM? |
BBCmicro (15761) | ||
| 1238221 | 2011-10-18 06:04:00 | You have to find out what's not working, if you plug in another Fan does it fire up, or plug in the CPU fan to another header. | wainuitech (129) | ||
| 1238222 | 2011-10-18 06:15:00 | Yup, if you ask for replacement without being 100% sure where the fault is they could snap you with charges for the replacement when your one is proven working. Or they could go full RMA process and send it to manufacturer while you wait |
Slingshot (16584) | ||
| 1238223 | 2011-10-18 06:33:00 | I tried a replacement fan from another CPU cooler and it didn't work either. I also tried forcing it on SILENT where it's supposed to go at low speed - didn't work either. Do you think a BIOS reset (CMOS short) would do anything? |
BBCmicro (15761) | ||
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