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Corsair Scimitar Side Buttons frequently not working after reboot


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Quite often when I start my PC the side buttons won't work even though I have them mapped and they did work previously.


I then need to restart the PC often more than once and eventually they will work again.


I am using CUE 2.10.71, the automatic update function was never ever worked. I always get the "CUE has detected an error during Software Update Check". Overall I think CUE Is a really shoddy piece of Software and I am really starting to regret switching my Naga mouse for this one.


The fact that the side buttons are not by default mapped to 1 to = by default is annoying, considering the Naga does not have this issue.


All of this would not be an issue if CUE actually worked but like I said, very often when I start my PC the mouse will function but the side buttons act as if I never mapped them even though they are and they did work before the restart.


Anyone else having this issue? How do I fix this?

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Hi Henry,


Yes I have the Scimitar. Which new one has buttons pre-mapped? And is this not something you can do with a firmware update for the "old" one?


I only bought this one in September 2016, it's only 6 months old!


CUE Version is 2.10.71(apparently the latest)

Firmware 2.04 (apparently the latest)


What system specs do you need?


Windows 10 64-Bit (10.0, Build 14393)


Intel i7-5820K 3.30GHz (Haswell-E) Socket LGA2011-V3 Processor - Retail (BX80648I75820K)

Samsung 250GB 850 EVO SSD 2.5" SATA 6Gbps 32 Layer 3D V-NAND Solid State Drive (MZ-75E250B/EU)

NX NZXT H440 New 2015 Edition Case - White & Black

MSI GeForce GTX 980Ti Gaming 6144MB GDDR5 PCI-Express Graphics Card (GTX 980 Ti Gaming 6G)

Super Flower Leadex GOLD 850W Fully Modular "80 Plus Gold" Power Supply - Black

WD Black 4TB 7200rpm SATA 6Gb/s 64MB Cache HDD - OEM (WD4003FZEX)

Asus X99-Pro Intel X99 (Socket 2011) DDR4 ATX Motherboard

Avexir Core Blue Series 16GB (4x4GB) DDR4 PC4-19200C16 2400MHz Quad Channel Kit (AVD4UZ124001604G-4CI) - Blue Light

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