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| Thread ID: 98948 | 2009-04-14 01:30:00 | Power fan Issue | minster (9180) | Press F1 |
| Post ID | Timestamp | Content | User | ||
| 764757 | 2009-04-14 01:30:00 | I recently built a new pc using a Asus M3N78 PRO motherboard. No problems, goes well except that the extra 120mm case fan I bought is quite noisy (as in going fast) It is plugged into the Pwer fan socket at front of the motherboard and does not seem to be adjustable (Speed wise) using the Q Fan modes that come with MOBO software. Anyway, yesterday I decided to do back ups of OS and Data while PC was going well and got that finished this morning. Before giving the pc back to my partner, I thought I would just unplug the front fan from the motherboard plug as pc is running cool and it's nearly winter. Hooked up the PC, turned it on and it ran very quietly......... for about 15 seconds and then turned it'self off! Tried again and same thing happened so I pulled the side panel off and reattached the front fan wire. Now everything is running good (but noisy again) but I am confused as to why unplugging the front fan wire should prevent the pc from going. What if I had not bought an extra fan in the first place? Any ideas Guys? |
minster (9180) | ||
| 764758 | 2009-04-14 01:32:00 | Check in the BIOS as there may be a setting to shutdown the computer automatically if a fan is not detected. This is to protect the system from overheating if a fan failed. |
CYaBro (73) | ||
| 764759 | 2009-04-14 02:32:00 | Q-fan may only work with the CPU and CHA fan. NOT the power fan. Look in the mobo manual. It'll tell you what fans Q-fan works with |
Speedy Gonzales (78) | ||
| 764760 | 2009-04-14 02:38:00 | Q-Fan does only work with the two you mentioned Speedy. I'll need to search in the bios as CyaBro suggested:thanks Just need to wait for when I can get the PC back from the woman, may be awhile:) |
minster (9180) | ||
| 764761 | 2009-04-15 09:19:00 | Had a look in BIOS today but I can't really see a setting that seems to be the one I need to find. I am obviously not wanting to make mistakes in this area. Anyone with a similar board/bios that can help would be appreciated. Thanks:) |
minster (9180) | ||
| 764762 | 2009-04-15 09:38:00 | I looked in the manual here (www.asus.co.nz) and I can't see anything for power fan | gary67 (56) | ||
| 764763 | 2009-04-15 10:03:00 | Yes that is what I tried as well and apart from disabling Q-Fan, I am unsure what to do. There must be a way to do this as in many cases the pc builder would not have installed a front fan (Optional extra) Thanks anyway. |
minster (9180) | ||
| 764764 | 2009-04-15 11:47:00 | As I understand; Q fan [mounted on the CPU heatsink,] endeavours to maintain the CPU optimum operating temperature. CMOS usually shows a start temperature and a designated 'flat out' temperature, and these can be tweaked. What motherboard would require the aux fans to be gunned down? Surely that would need another control system and to what purpose? I look forward to elucidation. |
PENTIUM (426) | ||
| 764765 | 2009-04-18 06:03:00 | I joined the ComputerLounge Forum and on advise from one of the mods there, I disabled the "Chassis Q-Fan Control. That did the trick and PC is now going well and without noisy front fan:) |
minster (9180) | ||
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