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power but no fans No boot
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I have an Alienware Aurora laptop. The machine is powered (LEDs lit, drive spinning) but no POST. None of the 4 fans spin at all. The screen doesn't show anything and the computer reboots. Upon internal inspection I saw the fan above the RAM has a wire that is no longer soddered. So that fan is dead for sure but the other 3 should be good.
Could this 1 non-working fan potentially prevent the whole system from booting? The model is prone to overheating.
Or are these just signs of a much bigger problem like a CPU or mobo?
Could this 1 non-working fan potentially prevent the whole system from booting? The model is prone to overheating.
Or are these just signs of a much bigger problem like a CPU or mobo?
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Join Date: Jun 2009
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Junior Poster
It sounds like a power supply problem. When did the problem start. How long have you had it. What happen when you put the OS disk it
Last edited by stevenpetersen; Aug 7th, 2009 at 5:57 pm. Reason: thought it was a desk top opps
Steven Petersen
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Posting Shark
Re-solder it and see if it will work.
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Originally Posted by stevenpetersen 
It sounds like a power supply problem. When did the problem start. How long have you had it. What happen when you put the OS disk it
Can a fan out that was connected to the mobo prevent even a POST or is that not really possible?
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Posting Shark
Yup, the mobo should be able to monitor if all the fans are working or not.
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Originally Posted by Rik from RCE
Yup, the mobo should be able to monitor if all the fans are working or not.
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Junior Poster
What modol Alienware Aurora do you have...... what Rik from RCE could be true but i would like to now the modol Number. If you know how to Re-solder do it. If not be very careful. you dont want to melt something.
Steven Petersen
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Without examining one for myself I can't be sure. There are plenty of PC's and laptops that wont boot with faulty fans so......
it's a Aurora 7700. I ordered a replacement fan (don't own soldering stuff) so I will see what happens when that comes in.
One little thing:
BIOS monitors the fans, and if the fans aren't spinning, then the BIOS gives you a warning during POST. If there's no POST, then the BIOS hasn't kicked in. In other words, the fan isn't a direct cause.
What you could be having there is PSU protection. Most PSUs have shorting protection that cuts off all power. That can be easily triggered by a lose wire touching a casing.
I'm not sure how to reset that kind of protection on laptops.. My best guess is to plug out the mains and remove the battery.
BIOS monitors the fans, and if the fans aren't spinning, then the BIOS gives you a warning during POST. If there's no POST, then the BIOS hasn't kicked in. In other words, the fan isn't a direct cause.
What you could be having there is PSU protection. Most PSUs have shorting protection that cuts off all power. That can be easily triggered by a lose wire touching a casing.
I'm not sure how to reset that kind of protection on laptops.. My best guess is to plug out the mains and remove the battery.
Last edited by Chaky; Aug 8th, 2009 at 1:45 am.
I say what I see. If you find my words offensive, then you find my reality offensive.
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