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Hello everyone! I have a small problem: I can't use any of the combinations Alt+1,2,3,4,5,7,8,9 however it works with alt+6 and alt+a letter or alt +numpad, but I don't know why.

I don't have any programs in the background except AMD CCC and the antivirus(I checked with antivirus turned off,same thing).

All the letters work individually.

Does anyone know why this is happening?

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try toggling num block.

Specs: CPU - Intel i7 8700K @ 5GHz | GPU - Gigabyte GTX 970 G1 Gaming | Motherboard - ASUS Strix Z370-G WIFI AC | RAM - XPG Gammix DDR4-3000MHz 32GB (2x16GB) | Main Drive - Samsung 850 Evo 500GB M.2 | Other Drives - 7TB/3 Drives | CPU Cooler - Corsair H100i Pro | Case - Fractal Design Define C Mini TG | Power Supply - EVGA G3 850W

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What keyboard do you have?

PC Specs: 

CPU: i7-9700k  | Motherboard: Gigabyte Z390 Aorus Elite | RAM: 16GB's Team T-Force Vulcan 3000MHz | GPU: Zotac GTX 1070 8GB AMP! Edition  | Storage: 500GB WD Caviar Blue | 1TB WD Caviar Black | Crucial BX200 240GB SSD | OS: Windows 10 64-bit  | PSU: EVGA SuperNOVA G2 650W 80+ Gold | CPU Cooler: Noctua NH-D14 | Mouse: Logitech G502 Proteus Spectrum Headphones: Sennheiser HD 598 Special Edition's, HD 598 Cs | Keyboard: CM Storm QuickFire XT MX Blues Monitors: Acer GN246HL 144Hz, Acer G226HQLBbd 60Hz | Case: Phanteks Enthoo Pro.

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If you are trying to use them all at once, it could be that your keyboard does not support a certain key rollover, so it's a keyboard limitation. If you are trying to press them separately, try shift or fn.

 

If it is the first thing I mentioned, kindly post the model and make of the keyboard you have so we can tell you the maximum amount of keys that can be pressed at once.

 

I hope this helps! :)

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