Machsupport Forum
Mach Discussion => General Mach Discussion => Topic started by: Overloaded on March 24, 2011, 03:13:41 PM
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Need help.
This was intermittent for several start ups, now won't work at all.
PC starts to boot up, then a message .. "CPU FAN is not connected".
The fan is plugged in to the mobo but looked like it was spinning at about half speed.
I put another fan on and it spins up to what looks like a normal speed but the PC still won't boot up.
Get the same message then it shuts down.
Yesterday after 4 attempts, it finally took off and ran normally.
Now it won't start even after umpteen attempts.
Any help needed badly.
Thanks,
Russ
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You could start on the bios and disable the CPU fan warning.
This not really recommended but give it a try.
Jeff
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Hi Jeff,
How do I get there.
There is a very brief screen, then the message.
Thanks
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Depend on what type of computer you have.
It is written when the computer boot.
Normally, this key is Delete
Jeff
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Normally, is you can enter in the BIOS, you should find under PC Health status the RPM for the fan.
If is is spinning, try reducing the RPM a bit to see if it's make any difference.
Jeff
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Jeff,
This is the only screen I get for about 3 seconds, then the FAN message, then it cuts OFF.
I can't get to the bios or anything else.
It is just a mobo mounted in my panel, not sure what it is. lol
Thanks
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when booting up, if you keep hitting DEL key, you can't get access to the BIOS???
This sound bad, look like a bad hard dive.
But even with a bad HDD, you should be able to access BIOS
Jeff
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Try downloading the manual for your mobo.
Sometime on some mobo, there's a jumper to skip or prevent access to the bios.
What brand and model is it.
Jeff
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If your computer does not boot at all, you will probably need to clear bios setup, it may be corrupted.
Or just to be sure, verify that keyboard is connected.
Jeff
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To be honest Russ it sounds like the mobos sensor is screwed but check the fan is connected properly and to the right header as often there are at least 2 or 3 fan headers. Also worth cheking the wires on the fan as there should be at least 3 possibly 4, if the fan you put on is from an old computer it may just have 2 wires.
Hood
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Hey Jeff,
Not much info seen on the mobo, just 663ASPRO Rev:1.2
Anyway, I pushed the impeller off of the fan (thought for sure I would break it) but it popped apart, then I put a drop of oil on the shaft and reassembled it.
It spins now like a raped ape and the PC runs OK now.
Now that it's running, I'll make note of the info.
Thanks Jeff,
Hood, the other 2 fans I tried were 3 wire as the original, tried on the original header. Thet were all 12v but the amps were all different. Maybe that's why they wouldnt work. I didn't realise the mobo gets feedback from the fan, good I guess.
A little lube is good for lod stuff. ;D
All is good for now.
Thanks,
Russ
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Russ, google tells you its a Jetway mobo. Glad its going now :)
Hood
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Hi,
Is this the manual for your mobo.
If it is, could be useful to keep a copy on hand.
Happy it was so simple and you make it work
Jeff
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Thanks guys, yes Jeff, that looks like it !
This is an antique lol, I expected the manual to be chiseled on a stone tablet.
Moer info there than I expected.
See the fan stuff too, amazing.
Thanks again men,
Russ
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I still have a Tandy 1000HX from radio shack, paid $2500.00, don't remember what year it was.
It have a huge 56K memory
But I lost my VIC20 and my TRS80.
Jeff