Aspire E1-510 fan not working in windows / works in BIOS

The fan is turning on when i first power up the laptop. Once UEFI starts and windows starts to load, the fan shuts down permanently. Ive tried booting from USB sticks, same thing. Once OS starts to load, the fan shuts down.

I just installed a brand new fan and its doing the exact same thing.

There is no fan control in BIOS. From what i have read around the internet, there is no software solution. Unless someone can come up with something else, im going to have to hardwire the fan to always be on. But this is not really a viable solution.

I tested the power leads to the fan. With laptop power yellow line has 3.25volts at all times, in bios and in windows. The red line starts at 2.5 volts in bios. when windows starts to boot, the red line drops to 0.06 volts and stays there, despite CPU temperature in windows being maxed at 70 degrees. This causes the cpu to clock down to 0.50 ghtz

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IronFly

have you already updated your BIOS?

2.12

http://global-download.acer.com/GDFiles/BIOS/BIOS/BIOS_Acer_2.12_A_A.zip?acerid=635677775458144547&Step1=NOTEBOOK&Step2=ASPIRE&Step3=ASPIRE%20E1-510&OS=81P1&LC=en&BC=ACER&SC=PA_6

ponyboyt

i did recently update to the latest bios to try and resolve this. It did not fix it. I dont remember the exact version, and the laptop is quite hard to use to check right now as its running about as fast an early model pentium 3. But i assume its on 2.12, that number looks farmiliar.

IronFly

have you checked those suggestions?

http://www.eightforums.com/tutorials/51043-power-options-add-remove-system-cooling-policy.html

ponyboyt

this system already has cooling policy in power options. On batter was set to passive, i set it to active. Plugged in is set to active.

No fan change. reboot and still no fan change. System is showing CPU 70 degrees clesius (Coretemp) and cpu running at 0.5 ghz

IronFly

last thing to try, is a factory reset or a system refresh.

ponyboyt

I sort of ruled that out. I pulled the hard drive and booted a copy of mini windows XP from a thumb drive, the fan shut off when the windows xp logo came up and started to boot into windows. I would think that should eliminate an OS issue.

Something in this system, likely the bios, is telling the fan to turn off instead of on. The fan works, i can supply power to it from a USB port and it spins.

ponyboyt

Is the fan temp controlled by a temp sensor in the fan? Or is it controlled by bios? I see Dell systems the fan is self contained with a sensor. RPM goes up when fan senses heat. If acer does this, well, this fan is cold, it will never spin.

IronFly

let me check but normally is controlled by BIOS.

IronFly

no mention if it's BIOS or fan sensor, by the way the part number is: 60.MGRN2.001

ponyboyt

maybe a whol other issue than what im thinking.

I just ran the fan for 10 mins full speed, no temp change in coretemp (coretemp also seems buggy on this system) but also in task manager CPU usage stays at 24% and clock speed is 0.49-0.51 fluctuating.

The fan was replaced before, about a year ago. the owner says it stopped working again. I am wondering if it was never working properly. I see there is a thick pad of cpu goop like material between the CPU and the very thin sheetmetal heatsink. This sheet looks very flexable and if bent the wrong way may not apply enough pressure. Is it safe to use normal thermal paste?

ponyboyt

also the whole time the fan was blowing cold air...

ponyboyt

cpu is not hot. Its very cold. Still stuck at 0.50 ghz

ponyboyt

Looks to be resolved. In power options, Maximum CPU state was set to 0%

IronFly

ahhaha poor CPU. Smiley Happy

Lanthum

I have the same problem with an aspire e1-531. I've had since i bought the laptop (over 2 years ago), but it never bothered me that much. Now that summer is here its been getting hotter than usual and today it shut down on me twice.

I've tried fixing it in the past too, but i never found a solution. Can you explain how you fixed it?

Lanthum

Someone, anyone?

ponyboyt

This one was never overheating. The fan was staying off because the CPU was COLD. someone had gone into power options and told the CPU to run at 0.5 ghz

Lanthum

Can someone help me then? The fan works in bios and not in windows.

Its overheating so much (80 degrees C) and it still doesn't kick in.

Checked the maximum cpu thing and its set to 100%

ponyboyt

what are you using to read those temps? When it gets that hot, restart, let the fan kick on high when bios load, feel the air coming out of the vent before windows starts to load. warm or cool?