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Dell 8400 PS2 Keyboard Works In XP But Not In BIOS

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July 1, 2010 4:18:16 AM

I have a Dell Dimension 8400. I am trying to add a new SATA drive for addition disk space. When I enter the BIOS (F2 from the keyboard), two things happen. First, the monitor says it cannot display. I turn the monitor off and back on, and I can see the BIOS screen. Second, and most importantly, the keyboard does not work. This is the same keyboard I'm typing on right now. The Num Lock light is solid green, but the keyboard does not respond. I have tried another keyboard with no success.

Any thoughts on how to get the keyboard to work in the BIOS so I can get the new drive installed or any other approaches?

Thanks!
July 1, 2010 6:26:48 AM

Is this a wireless keyboard or a keyboard that is rigged directly into the computer via USB?
July 1, 2010 12:44:34 PM

It's a PS/2 keyboard connected directly into the computer. It is not USB. I ahve tried another PS/2 keyboard - same result. Everything works fine in Windows - but it is non responsive in the BIOS.
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July 1, 2010 7:12:07 PM

Sometimes the old PS/2 slots fail or just aren't up to date with the new technology, hence why USB keyboards and such are the "new" thing. If possible, borrow a USB keyboard off of a friend. That should get things working for you, at least in the BIOS.
July 2, 2010 12:09:43 AM

Try removing the CMOS battery for ~5 minutes. The fact that the monitor shuts off at the same time the keyboard stops working, makes me think the problem isn't with the keyboard. It sounds like the system is locking up.
July 2, 2010 12:45:50 AM

Good point. I neglected to think of that. It's rare, but BIOS do lock up on occasion. Try what aford recommended if a USB keyboard doesn't do the trick.
July 3, 2010 4:55:06 AM

Thanks for the inputs. I did some more troubleshooting, and it turned out to be the system locking up due to the video. I moved over to an analog video cable and resat the video card. Not sure which it was, but I was able to get into the BIOS and configure the new drive. Thanks!

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July 3, 2010 5:00:47 AM
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Thanks for the update.

Glad to hear it's working.
July 10, 2010 5:09:41 AM

Best answer selected by pahey.
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