Member Avatar for andrew1216

i have an Asus M4A78-VM mobo and, by chance, the keyboard isn't detected. The device manageer shows the HID of my USB Keyboard with a yellow exclamation point and i have to install the driver manually. It's really annoying for me because i can't setup a user password because i won't be able to log on if this problem occur. I wonder if the defect is in my mobo and should i RMA this board. Another problem is, by chance again, when i load windows 7 it loads up 60x faster and when i press a key in windows log on screen, maybe 4-6 characters appearing in just one key press. i really don't know what to do coz it only occurs by chance and it might not show up if i am to bring my CPU in the shop where i bought this one.

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  • Latest Post Latest Post by liisyaoron

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Following and , a concise, prioritized diagnostic checklist and practical notes to separate a motherboard/firmware fault from a Windows/driver problem — plus the specific diagnostics vendors will want before any RMA.

  • Reboot to the firmware (BIOS/UEFI) and observe keyboard response at the firmware screen. Responsiveness in firmware points at Windows/software; failure there points at motherboard/firmware or the keyboard/port hardware.
  • Test with at least two known-good wired keyboards and use the rear I/O ports (avoid front-panel hubs). If available, try a PS/2 keyboard. Consistent failure across multiple keyboards and ports indicates the board.
  • Boot a Linux live USB or Windows PE environment. Working keyboards there usually mean Windows drivers/settings are at fault.
  • In Windows, capture exact Device Manager device status text and any error codes, then uninstall the HID/keyboard device (choose “delete driver software” if present) and reboot. Install the board’s chipset/USB drivers from the manufacturer support page.
  • Disable USB power-saving on USB Root Hubs and turn off USB selective suspend in Power Options.
  • Check accessibility and keyboard settings: Filter Keys, Sticky Keys, and the keyboard repeat delay/rate can produce strange input behavior; the Ease of Access (On‑Screen Keyboard) is usable at the logon screen for fallback.
  • Reset CMOS to defaults and toggle USB legacy/hand-off options in firmware. Update BIOS only after confirming the problem persists and following manufacturer instructions.
  • For intermittent faults, collect a short video showing the failure, the Device Manager text, and any relevant System log entries. RMA is reasonable when the keyboard fails in firmware and across multiple OSes/ports; otherwise focus on drivers/settings.

These steps prioritize fast isolation. The most useful report for others or a vendor is: whether the keyboard works in BIOS, in a live OS, and the exact Device Manager status string or Event Viewer error.

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Member Avatar for mechbas

And the reason you can't set up password . . . IS?

Member Avatar for liisyaoron

Hmm, yeah give a much more detailed explanation pertaining to your problem.. we wouldn't be abl to help you much out if we don't really know what's the problem right..?
Please give much more details, thank you :)

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