Hi,
Before opening this thread I read all the topics I could find on this forum about similar problems.
I have an Asus Zenbook UX51V with a faulty mainboard (internally shorted PCH and ITE) and so I bought a used replacement board.
Everything is working fine, Windows loads without problems, all drivers are installed and every device is working fine, except both fans are spinning all the time at full speed as soon as I turn on the laptop.
In Windows, using HWMonitor temps are normal and if I stop the fans with my fingers temps do not rise suddenly (new thermal paste applied and heatpipe is making a good contact with both CPU, GPU and PCH).
What I tried so far, based on my researches:
- Installed Notebook Fan Control but it is not able to control the fan speed even if this notebook is fully supported;
- Installed SpeedFan, shows cpu fan speed over 5700 rpm and if I slow down the fan with my finger the reading decreases accordingly;
- Tried to update the bios with the Asus utility but it is already the latest version (v.204 is the latest for UX51VZA);
- Desoldered the BIOS chip and dumped, cleaned ME and reflashed, no change, everything is working but fans are always at full speed;
- Flashed with a BIOS dump (v.205 for UX51VZ) I found on this forum, no change;
- Flashed with the BIOS dump of my old faulty board, no change;
- Disconnected the LCD, keyboard, backlight etc., no change;
At this point I think that the problem is not the BIOS (including EC firmware and ME).
Any suggestion? If it is a simple fix I would like to avoid to contact the seller for a return/refund.
Attached the original bios dump from the new board with the fan speed problem and the boardview.
Thanks in advance.
Before opening this thread I read all the topics I could find on this forum about similar problems.
I have an Asus Zenbook UX51V with a faulty mainboard (internally shorted PCH and ITE) and so I bought a used replacement board.
Everything is working fine, Windows loads without problems, all drivers are installed and every device is working fine, except both fans are spinning all the time at full speed as soon as I turn on the laptop.
In Windows, using HWMonitor temps are normal and if I stop the fans with my fingers temps do not rise suddenly (new thermal paste applied and heatpipe is making a good contact with both CPU, GPU and PCH).
What I tried so far, based on my researches:
- Installed Notebook Fan Control but it is not able to control the fan speed even if this notebook is fully supported;
- Installed SpeedFan, shows cpu fan speed over 5700 rpm and if I slow down the fan with my finger the reading decreases accordingly;
- Tried to update the bios with the Asus utility but it is already the latest version (v.204 is the latest for UX51VZA);
- Desoldered the BIOS chip and dumped, cleaned ME and reflashed, no change, everything is working but fans are always at full speed;
- Flashed with a BIOS dump (v.205 for UX51VZ) I found on this forum, no change;
- Flashed with the BIOS dump of my old faulty board, no change;
- Disconnected the LCD, keyboard, backlight etc., no change;
At this point I think that the problem is not the BIOS (including EC firmware and ME).
Any suggestion? If it is a simple fix I would like to avoid to contact the seller for a return/refund.
Attached the original bios dump from the new board with the fan speed problem and the boardview.
Thanks in advance.
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