getting into bios without keyboard

February 17, 2011 at 12:09:04
Specs: Windows XP, AMD Phenom II 2GB DDR3 Ram
I have USB legacy disabled in my BIOS. I've been using a wireless keyboard via the PS/2 port, but this has stopped working for some reason. I can still use the PC by plugging a USB keyboard in after I've booted into Win XP, but I can't get into the BIOS to see if my PS/2 port has become switched off . . .

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#1
February 17, 2011 at 12:47:12
There is no option in the BIOS screens to disable the PS/2 port.

If you have a PS/2 port then connect a PS/2 keyboard as least temporarily, to enable USB support.

If you plugged or unplugged your adapter to the PS/2 port, you may have damaged it. PS/2 ports are not hot swappable.


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#2
February 17, 2011 at 13:32:19
In some cases you can access bios from xp with tools, well actually it should be possible still from very basic tools. It is a memory location.

PS/2 ports have had a small fuse on them. Usually looking at the keyboard lights at boot would indicate that maybe that fuse has blown. May be called R1 or F1 or H1 or other term but it is there near the ps/2 port.

"The era of big government is over," said Clinton 1996


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#3
February 17, 2011 at 14:32:35
jefro

I just examined a couple of ATX boards and I can't see where there could possibly be a fuse on the PS/2 ports. Nothing removable at all.

If they exist then how about posting a picture?


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Related Solutions

#4
February 17, 2011 at 14:43:51
Thanks very much for the replies, much appreciated.

http://premium1.uploadit.org/Treble...

It appears that there an on/off option in the bios of my Asrock m/board.

This all came about because I bought a USB Hauppage TV tuner. Once plugged in and configured my ps/2 keyboard stopped working. That's why I tried a USB keyboard and how I discovered my USB issue and my inability to access the bios.


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#5
February 17, 2011 at 14:50:36
That option is to wake up the computer, not enable or disable the device.

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#6
February 17, 2011 at 15:04:34
Ah, my apologies in that case.

Jefro Can't find any way into the BIOS via XP tools?


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#7
February 17, 2011 at 15:52:29
So, I take it you don't have a wired PS/2 keyboard to try?

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#8
February 17, 2011 at 16:15:29
Good idea! I've just been in my loft and retrieved an ancient hard wired ps/2 keyboard. Rebooted, and pressing DEL on the ps/2 keyboard got me into the BIOS. I've altered the USB legacy setting to 'Enabled' but then on boot-up the ps/2 keyboard stopped working and I've had to resort to the USB keyboard again.

Very odd. I hate computers . . .


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#9
February 17, 2011 at 19:27:37
Is the PS/2 port you are using purple or green? Use the purple one.

Don't switch it while the computer is on.


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#10
February 18, 2011 at 13:32:15
The fuse does not look like traditional agc fuse. The fuses are surface mount components and can appear to be as any SMT device.

Ultimate boot cd or hierens cd or tools found on them may allow one to access bios.

Debug can usually access bios too.

"The era of big government is over," said Clinton 1996


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#11
February 18, 2011 at 13:48:49
jefro

A fuse is not much good if it can't be replaced. I am always willing to learn. Post a picture of such a fuse so I can tell what to look for.


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#12
February 19, 2011 at 02:57:26
I was using the purple. Still no joy with it though.

Most frustrating is the USB keyboard. On boot up the Num Lock light is on, and stays on after Windows has started, but the keyboard won't work unless it's unplugged and then plugged back in again.


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#13
February 19, 2011 at 07:39:50
Wireless keyboards are finicky at best. If you get them to work in the BIOS or POST screens at all I would say you are in the minority.

You have implied this configuration was working OK in the past. Is that correct? If so, perhaps it is a matter of the battery strength or the receiver location.

Why are you using the PS/2 adapter on a USB keyboard anyway? If a fuse were present and blown I wouldn't think the keyboard would ever work.


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#14
February 19, 2011 at 09:00:23
The wireless keyboard is a Packard Bell and I've been using it for 5 years. It was working until I plugged the Hauppage USB decoder into the PC. The receiver unit still flashes with each keystroke when I type which indicates it's working normally.

My issue now is that having abandoned the wireless keyboard my hard wired USB keyboard won't work after Win XP has loaded unless I unplug it and plug it back into the USB port. This means I have it in a USB port on the front of the machine because I need access to it every time I boot up.


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#15
February 19, 2011 at 10:03:25
In that case, try going into device Manager and removing all the USB controllers. Then reboot. Windows should re-install them using the same drivers as the originals.

If that doesn't work then get the latest motherboard chip set drivers and apply them.


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#16
February 19, 2011 at 12:35:45
Just uninstalled/reinstalled the USB drivers . . . no change sadly. I'm not confident about updating the m/board software.

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#17
February 19, 2011 at 12:40:45
Motherboard chip set drivers are installed while you are in the Windows operating system. You are thinking of a BIOS update, which I didn't suggest.

Post the full model of your motherboard.


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#18
February 19, 2011 at 12:50:34
My m/board is an ASRock N68C - S

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