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Windows 7: Caps Lock Coming On Spontaneously/or When Non-Caps Lock Key Pressed

12 Mar 2017   #11
gary palmer

Microsoft Windows 7 Professional 64-bit 7601 Multiprocessor Free Service Pack 1

Thx Ranger Four...have tried using a different USB port and makes no difference to the problem.
When I mentioned possible OS bug I actually meant some sort of corruption may have happened to 'my' OS software code, but as wired and wireless keyboards once they input to PC at USB port are using same OS and keyboard emulator chip on MOBO have eliminated these two variables of OS and emulator chip.

Will just keep testing and try to discern what is device that may be the cause. Trying to identify a specific device is tricky as they are so many 2.4Ghz devices around these days...heaps.

Will stick to my Logitech K800 keyboard as this one is the nicest keyboard I have ever owned. A 10/10 product and I would recommend it to others too. Have made some changes so keyboard and receiver are much closer together and further away from other devices that may cause interference such as PC, modem etc...


My System SpecsSystem Spec
21 Mar 2017   #12
gary palmer

Microsoft Windows 7 Professional 64-bit 7601 Multiprocessor Free Service Pack 1

Have concluded after much testing that this is 99% likely to be a radio interference problem; which I cannot solve 100% as identifying what 2.4Ghz frequency device is the cause is like finding a needle in a haystack. I do not believe it to be some other device within my house and is probably one of the many many 2.4Ghz devices outside of my house. The problem only occurs about once every two weeks or so and is rare so shall just live with it. When it does happen it is very much a once off that time. Have lowered the frequency of problem by simply moving my Logitech receiver very close to my keyboard/mouse and that has helped. There is info on Google that indicates that the 2.4Ghz frequency is over used and somewhat crowded. Some of these devices use cheap nasty components which would contribute to this type of problem.

Thanks to all of you who helped my narrow down the cause. Gary
My System SpecsSystem Spec
21 Mar 2017   #13

Windows 7 Home Premium 64 bit sp1

You are welcome. Sorry to hear you can't find the source of the problem, so I suppose there is no alternative other than living with it.
My System SpecsSystem Spec


 Caps Lock Coming On Spontaneously/or When Non-Caps Lock Key Pressed

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