Windows 10: Only one side of laptop fan working

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  1.    17 Feb 2018 #1

    Only one side of laptop fan working


    After disassembling and reasembling everything together, only right fan is working, and is going on full blast. I disconnected the right fan cable to see if left fan is working, it is working after I disconnect the right fan. But when connected the right fan back, the left stops working and the right is on full blast. Why is this issue happening, does it have to do with bios?
      My ComputerSystem Spec

  2.    17 Feb 2018 #2

    Emmmmmmmmmmm, I have to ask ...... are you SURE you assembled everything correctly? Why the need to disassemble in the first place? Was it doing this BEFORE the disassembly?
      My ComputerSystem Spec

  3.    17 Feb 2018 #3

    indianacarnie said: View Post
    Emmmmmmmmmmm, I have to ask ...... are you SURE you assembled everything correctly? Why the need to disassemble in the first place? Was it doing this BEFORE the disassembly?
    I was cleaning out the system. Yes I'm 100% sure I assemble everything correctly, I unplug the right fan to see if the left one is working and it is, but they don't work in tandem. No it wasn't doing this before.
      My ComputerSystem Spec

  4.    18 Feb 2018 #4

    Well, .............................. seeing as to how it wasn't doing this BEFORE you disassembled it ............. and it is NOW ............ I would advise you to try it again because its pretty obvious you didn't reconnect something and/or joggled something. No, its not a Bios issue.
      My ComputerSystem Spec

  5.    18 Feb 2018 #5

    indianacarnie said: View Post
    Well, .............................. seeing as to how it wasn't doing this BEFORE you disassembled it ............. and it is NOW ............ I would advise you to try it again because its pretty obvious you didn't reconnect something and/or joggled something. No, its not a Bios issue.
    Is weird that only one fan is working at a time. Both fan are working as I tested. Could it be a battery issue, sending too much pwr to one side of the fan. I have the asus gl502vs, does it have to do with battery setting and graphic card optimus setting
      My ComputerSystem Spec

  6.    18 Feb 2018 #6

    I disassembled a few laptops in my day, can't recall ever seeing one with two fans. Love to see a pic.
    Is this a gaming laptop? Could the second fan be for the video chip?
    If so, then it could very well be a fan setting that has changed. So let's not rule that out right away.

    What is the brand and model number?
      My ComputerSystem Spec

  7.    18 Feb 2018 #7

    TV2 said: View Post
    I disassembled a few laptops in my day, can't recall ever seeing one with two fans. Love to see a pic.
    Is this a gaming laptop? Could the second fan be for the video chip?
    If so, then it could very well be a fan setting that has changed. So let's not rule that out right away.

    What is the brand and model number?
    Is the asus gl502vs, you can search the internal up on gl, I also think is the sw setting but can't figure out why
      My ComputerSystem Spec

  •    18 Feb 2018 #8

    I just looked through the users manual for that machine and the BIOS settings. I do not see any Power Settings for fans.
    You could reset the BIOS Defaults just for good measure. Just be sure to note any system changes that you have made manually so you can set them back afterward.

    You could scan any Asus utilities installed on the laptop that might have anything to do with cooling, fans, or power control. But I doubt this is an option.
      My ComputerSystem Spec

  •    18 Feb 2018 #9

    TV2 said: View Post
    I just looked through the users manual for that machine and the BIOS settings. I do not see any Power Settings for fans.
    You could reset the BIOS Defaults just for good measure. Just be sure to note any system changes that you have made manually so you can set them back afterward.

    You could scan any Asus utilities installed on the laptop that might have anything to do with cooling, fans, or power control. But I doubt this is an option.
    There's no sw to control pwr or fan.I already reset the bios and still issue persists.
      My ComputerSystem Spec

  •    18 Feb 2018 #10

    Then I have to agree with the others that the problem is mechanical: something that happened during the disassembly and reassembly. You will need to check everything carefully. Look for power headers installed reversed (rotated 180 degrees).
      My ComputerSystem Spec


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