Fan on Inspiron 1520 not coming on. Diagnostics gave error code "3700:011B". Took fan out (it wasn't even dirty) and jumpered red & black wires (p.s. don't know what yellow wire is for) to a 5 volt dc power source - fan worked fine. Put laptop all back together - fan still not coming on - HELP
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This error would mean that there is fan failure. It might require fan replacement on the system. However, please check the link below for updating BIOS and Chipset for your system:
Please perform these steps and let us know the results of the same so we can advise you further.
Thanks and RegardsSandeep P#iworkfordell
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Flashing BIOS and updating Chipset software did not get fan going. I found software "I8KfanGUI" which got the fan working. Dumb me - I ran the system diagnostics 'F12' , forgetting that the "I8KfanGUI" software wouldn't run until after Windows loaded - so by the time I got through the memory testing and on to the fan test, things were getting quite warm (HOT); and of course the fan test failed. As soon as I exited the diagnostics and let the machine load windows, the "I8KfanGUI" program kicked in and the fan started working. I don't know if this is somehow related, but - the fan problem turned up after automatic updates told me I needed to install serveral .net Framework 2.0 SP2 files, which I installed, Now updates keeps telling me over and over to install these (KB2656369, KB2686828, KB2604092, & KB2518864) updates, which I've done at least three times. I finally checked 'do not remind me' to get rid of the annoying notice.
Its great to hear that fan is working right now. Thanks for your sharing the resolution which would be useful for many customer with similar issues.
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