Solved! Shift key issue

[ihamooode335]

hi i have an issue with my shift key it acts so weird when i'm playing games like when i was playing Rainbow Six siege i tried to sprint using shift but when i held it down it pressed (z, Tab, T, ....) i don't know why and when i played fortnite some time when i press shift it sprints and sometimes it doesn't

 

[hang-the-9]

Clean the keyboard, make sure nothing is under the key. See if the same thing happens with an external keyboard.

 

[ihamooode335]

Clean the keyboard, make sure nothing is under the key. See if the same thing happens with an external keyboard.

it didn't work

 

[Prostar Computer]

it didn't work

An external keyboard didn't work, either? That would mean your keyboard controller is bad, which means the motherboard would need to be repaired or replaced.

If an external keyboard works, then you may just need to replace the built-in keyboard.

 

[ihamooode335]

it didn't work

An external keyboard didn't work, either? That would mean your keyboard controller is bad, which means the motherboard would need to be repaired or replaced.

If an external keyboard works, then you may just need to replace the built-in keyboard.

the built-in shift key works when i write but i cant change the language with shift+alt and when i play it toggles sprint normally you have to hold shift to sprint

 

[Prostar Computer]

You can try taking the key cap off to look for any physical issues; anything stuck under the key, or to see if the rubber spring is messed up. If no physical problems with it, then probably a faulty circuit - you'd have to replace the keyboard in that case.

EDIT: The key caps are fragile, so if you decide to remove it to investigate, be careful!