Solved USB keyboard not detected in boot screen

April 12, 2016 at 01:04:58
Specs: Windows 7
hi, my motherboard is GA-P55-US3L

my USB keyboard work fine in wondows. but I not able to enter BIOS screen

What i have tried:
1. reset CMOS by taking out the battery for 1 hour with cable cord unplugged
2. press f1 to f12, del, del (numpad), esc, tab all wont work
3. use USB-PS2 converter (i got 2) and wont work too.

In this case, how do I enter BIOS screen ?


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✔ Best Answer
April 12, 2016 at 20:26:51
There's most likely a BIOS setting to enable USB support. If it had been enabled at one time, removing the battery likely disabled it again. You need to get a true PS/2 keyboard, not use a USB/PS2 adapter.

BTW, resetting the BIOS only takes a few seconds, not an hour. The power cord must be unplugged.



#1
April 12, 2016 at 01:56:42
According manual keep tapping <del> key at POST or LOGO screen to enter BIOS.
http://download1.gigabyte.asia/File...

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#2
April 12, 2016 at 05:35:17
my keyboard was not detected so even though i press del.. it just wont enter BIOS

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#3
April 12, 2016 at 08:14:03
My experience is that motherboards equipped with PS/2 ports default to a PS/2 keyboard. The BIOS should have an option to enable legacy USB support. Unfortunately, you may need to temporarily connect a PS/2 keyboard to get into the BIOS to change that setting.

Not all USB keyboards will work with a PS/2 to USB adapter. Generally you need to use the adapter that came with the keyboard.

Try a wired USB keyboard connected to one of the rear USB ports.


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Related Solutions

#4
April 12, 2016 at 08:37:31
Does your motherboard BIOS natively support USB connections?

If designed for PS/2 ports, your only chance is to access BIOS using an old PS/2 keyboard, since USB support at running time is provided by Windows drivers, still not loaded at POST time. The same problem if you need to boot in safe mode.


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#5
April 12, 2016 at 19:41:07
Too bad i couldn't find a PS/2 keyboard in my country anymore. sigh. Thanks for the help.

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#6
April 12, 2016 at 20:26:51
✔ Best Answer
There's most likely a BIOS setting to enable USB support. If it had been enabled at one time, removing the battery likely disabled it again. You need to get a true PS/2 keyboard, not use a USB/PS2 adapter.

BTW, resetting the BIOS only takes a few seconds, not an hour. The power cord must be unplugged.


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