- Jul 2, 2014
- 11
- 0
- 4,510
My keyboard lights flash when i turn my psu on and off could i have a bad motherboard or powersupply?
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Do i have a bad motherboard
- Thread starter Riley19280
- Start date
KillBot
Honorable
- Jan 5, 2014
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Some motherboards allow power through the usb even while off or in standby (for charging devices). That is probably why you see the keyboard light up. Check your motherboard documentation or settings for this feature (or post the model #).
- Jul 2, 2014
- 11
- 0
- 4,510
The reason i concerned i because my pc isnt even on and it is sending power to the mobo because thats where the keyboard is plugged in
That's alright. I leave my power supply on all the time. If you keep having power blackouts its a good idea to leave your power supply turned off when the pc isn't being used.
Depends on the keyboard whether lights stay on. Mine don't when I turn the pc off - even if I leave the power supply on.
Depends on the keyboard whether lights stay on. Mine don't when I turn the pc off - even if I leave the power supply on.
- Jul 2, 2014
- 11
- 0
- 4,510
Unolocogringo
Illustrious
- Dec 31, 2007
- 7,777
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Without knowing your motherboard model.
Some motherboards will have a jumper and others a bios option to power the PS2 and a couple USB connectors off of the 5vsb or 5 volt stand by circuit from the power supply. Which is still supplying power when the computer is off, but not when the power supply is turned off by its switch.
This allows for charging devices by USB or to start the computer by mouse or keyboard buttons.
Some motherboards will have a jumper and others a bios option to power the PS2 and a couple USB connectors off of the 5vsb or 5 volt stand by circuit from the power supply. Which is still supplying power when the computer is off, but not when the power supply is turned off by its switch.
This allows for charging devices by USB or to start the computer by mouse or keyboard buttons.
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