Connect the ac adapter before updating the bios and do not use the system until it restarts after the update.
Fan error dell computer.
You can find information about diagnostic tests troubleshooting steps how to guides and relevant support videos for assistance.
Once the bios is updated please run the hardware diagnostics follow the steps below.
Refer to the user manual of your dell pc.
When he mentions that the bios tells the motherboard not to send energy power to the fan.
Diagnostics do not find anything wrong.
Power the system on press f2when you see delllogo on the main bios screen press alt f then press alt eand then alt b.
Check the cpu fan s settings in bios.
It can occasionally be used to troubleshoot tech issues and to make sure everything is as it should be.
You may also follow the steps below to reset the bios to defaults and see if it helps.
Cleaning the air vents on your dell pc.
One upon boot the bios laptop doesn t detect the fan and says the fan is not functioning and it halts the boot process.
Open bios then select advanced settings hardware monitor cpu fan.
Now rerun the diagnostics if the issue persists we need to replace the fan.
Check the air vents on the pc for dust or debris.
Disable passive heat sink and fan duct without fan.
Please shut down the computer press the fn power this will initiate the hardware diagnostics.
Use a can of compressed air to remove dust or debris from the air vents dust filters if any and cooling fan fins.
Turn off the pc.
If you read my issue the laptop suffers from two different issues.
As result of this i see that often the fan is running at top speed with humming noise from fan and then after 10 20 seconds fan is almost at 0 rpm then again the cpu temperature rises about 55 60 degrees then again fan starts with top speed until again the cpu temperature goes below 48 52 degrees.
Save your changes and exit bios.
Use dell online diagnostics quick test for dell pcs to analyze identify potential issues and offer solutions guidance.
However since then whenever i run dell diagnostics fan testing is throwing an error code 3700 011b it is unable to control the fan speed however it is showing proper rpm speed.
Enable active heat sink and fan duct with fan.
Let us know if there is any error code listed.
Learn how to troubleshoot problems with the fan on your dell desktop or laptop pc.
If you experience a loss of ac power or a significant voltage sag spike during the bios flash you will either have to buy a new bios chip or buy a new motherboard.
Air vents may be located in various places depending on the pc model.