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Name: rapattack
Hi I changed the power supply of my amd machine and now I cannot use the keyboard during booting like to access the bios or to choose in which hard drive to boot to. It is a ps2 kb so I don't know why this would happen. The KB works once I am loaded into the OS.
"The meaning of life is to be happy and useful" Tenzin Gyatso the 14th Dalai Lama
Off the top of my head, did you replace a 24 pin power supply with a 20 pin? Some of them have an extra 4 pin plug that goes to the mother board, besides the main plug.
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Did you happen to unplug the keyboard when changing the PSU? You may have connected it to the wrong PS/2 port. Once in Windows the OS can sort that out but the BIOS can't.
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It is a standard ATX power supply which is what I had before. I know the extra 4 pin one your talking about and this motherboard doesn't need that even though the power supply has that included. I use linux so can't use whatever software.
"The meaning of life is to be happy and useful" Tenzin Gyatso the 14th Dalai Lama
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It doesn't seem possible that a power supply change would affect the keyboard.
Try resetting the bios with the jumper on the motherboard.
You 'might' need a new motherboard battery.
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Yes but when I am in the operating system everything is working. The first thing I did is reseat the keyboard connection on the back of the pc.
MMMmmmm change the bios battery ....might try that then. I find the batteries don't last anywhere near as long as years ago for some reason ....does anyone else agree?"The meaning of life is to be happy and useful" Tenzin Gyatso the 14th Dalai Lama
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I don't see why the battery would only affect the keyboard if it were bad. If it's a PS2 keyboard, try a USB keyboard.
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rapatack
I explained above. There are TWO PS/2 ports on the back of your computer. One of them is green and one is purple. Purple on is for the keyboard.
If you reverse them Windows may be able to configure both devices anyway but the BIOS can't do that.
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guapo, my reasoning was that a bios problem might have been caused when the power supply was replaced. If the battery was failing it might have caused the bios settings to be corrupted when power was removed from the motherboard.
It doesn't seem to be a keyboard or keyboard adater problem because the keyboard works ok in windows.
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In Linux actually!!! Not using windows!!!!
I can't use a usb keyboard with Linux so that is out. Will try another ps2 kb later as I do have a spare. It is connected to the right ps2 port. Thanks! :0)"The meaning of life is to be happy and useful" Tenzin Gyatso the 14th Dalai Lama
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aegis For some reason, the keyboard isn't working until the OS loads is because it either needs the driver from the OS or the power to the mobo isn't getting to the PS2 port until it loads.
What drives the keyboard during POST time?
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Yes would love to know myself as I have never come across this before.
"The meaning of life is to be happy and useful" Tenzin Gyatso the 14th Dalai Lama
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The PS/2 keyboard function during POST is independent of any OS. If you think about it the keyboard functions fine before any OS or even a hard drive has been installed. The BIOS controls the keyboard until it is handed off to the OS.
I suppose you could try setting the BIOS to have it configure the hardware.
You still haven't said if you have the keyboard plugged into the right port.
The default for the PS/2 keyboard is IRQ 1.
The default for the PS/2 mouse is IRQ 12.
Check in Device manager and see if that is what is being used.
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I did say that the kb is plugged into the right port. I do not have 'device manager' as I do not use windows. What I do have in linux looks fine. Unless you were asking the other poster?
"The meaning of life is to be happy and useful" Tenzin Gyatso the 14th Dalai Lama
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Sorry rapattack, I forgot you are running Linux. Don't use Linux so I don't know what utility might check that. Looking back I missed your answer in #10.
You should still be able to see the hardware assignments in the POST screens.
Perhaps you can set your BIOS to allow the BIOS to configure the hardware. Most BIOSes allow that setting somewhere in the screens.
One other thing that might mean something. I recently read that some PSUs no longer supply certain negative voltages. I don't know what the relevance of that might be, but it might account for a difference in the two PSUs.
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That's cool OnTheHill. Easy to miss that info sometimes. i have windows on another machine but that is another subject.
I am not sure what you mean by hardware assignments. I know there is info about what drives are detected etc, what specifically do I look for?
I can't get into the bios because of the kb not being active during post.
Ah ok interesting about the psu changes. Might see if I can contact the motherboard manufacturer even though they wouldn't support it anymore. Not sure really."The meaning of life is to be happy and useful" Tenzin Gyatso the 14th Dalai Lama
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"I can't get into the bios because of the kb not being active during post."
Resetting the bios might fix that.
Linux doesn't have anything to do with the keyboard problem. The keyboard is not functioning during the time the Bios is controlling it.
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When you start the computer the first screen show the memory as it was checked. Then a list of your drives is on the next screen. Then the next screen will show all the other hardware that uses an IRQ. The number in the extreme right column is the IRQ assignment for that hardware device.
Look and see if the keyboard is assigned IRQ 1.
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Hey, why don't you try disconnecting ALL drives and see if the keyboard is still non-responsive in the start up screens.
That may tell you if it is a BIOS issue or if it happens when the BIOS is handing off the hardware to Linux.
You may want to look at the labels on both the old and new PSUs. There are various versions of ATX PSUs.
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What? Where? How? All I can say is I am OtheHill, LOL.
Anyway the principle is the same. The BIOS hands off hardware configuration to a compliant OS. Windows, or Linux.
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To be perfectly accurate, the bios actually transfers control to the Master Boot Record on the drive. Which gives control to the OS. But that's pretty nitpicking. :-)
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Yes I tried disconnecting drives etc and I can't remember what happened but I know it was nothing to tell me anything. Sorry things are so busy at the moment that it is hard to remember details. I will get another bios battery and do that. I think I did say that before but I forgot. I looked at the IRQ thing but the thing goes too fast for me to see it ....i tried many times. So it is off to get a battery tomorrow.
"The meaning of life is to be happy and useful" Tenzin Gyatso the 14th Dalai Lama
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Doesn't work with this computer. I am not sure why.
"The meaning of life is to be happy and useful" Tenzin Gyatso the 14th Dalai Lama
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Gees, I'm asleep at the wheel here again. Your keyboard isn't working, of course scroll lock doesn't work. You have one strange problem. I can't recall if you ever looked in the BIOS to see if you can enable the BIOS to configure the hardware.
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I can't get into the bios! The keyboard is working normally. I plugged in my keyboard from my other desktop and no difference.
Still haven't got a replacement battery yet. It's that time of the year and I keep getting distracted."The meaning of life is to be happy and useful" Tenzin Gyatso the 14th Dalai Lama
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Well it is! It works with the windows machine so it is. Maybe it is the bios as mentioned.
"The meaning of life is to be happy and useful" Tenzin Gyatso the 14th Dalai Lama
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Let's go back to the beginning. It started when you changed the power supply. Open the box, disconnect and reconnect, the 20 pin plug that goes to the mother board. Look for any bent or damaged pins. While you have it opened, look for anything that may have been disturbed during the change. Did anything fall into the box that could cause a short?
Check all the other connections to all the drives. Try to be a detective.
Not that it should matter but did a new power cable come with the power supply and are you using it?
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I think I did check all that as I have had a bent pin problem happen before with a hard drive. It was a couple of years ago but you never forget it. Anyway will have to do all that later. Thanks!
Gotta get to the shops before Xmas."The meaning of life is to be happy and useful" Tenzin Gyatso the 14th Dalai Lama
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Geeeeeeeeeeeeeeeeeeeeeeeeeezzzzzzzzzzzzzzzzzzz I am so embarrassed. I got a new bios battery, changed it and replugged everything...noticed that the keyboard was in the wrong port. I don't know when that happened as it was working for ages. So sorry everyone. The weird thing is though the bios is now saying the the hd's are on secondary cables not primary. Odd. I haven't changed them. Maybe that also happened because really that is what it is supposed to be and the bios previously was listing things wrongly. If you know what I mean. Odd. Anyway will check out what I have done and see.
"The meaning of life is to be happy and useful" Tenzin Gyatso the 14th Dalai Lama
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Name: OtheHill
Date: December 17, 2008 at 07:53:25 Pacific^^^^^ He asked you that over a week ago.
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You should be embarrassed. I questioned the PS/2 port in responses #2,5,8,13. You told me at least twice you had it in the right port.
Obviously you never looked. What a waste of energy.
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Well it was working before so I thought it was fine. Ah well that was a really bad week. I had a death to deal with, a neighbour that was stalking me got evicted and so much turmoil. Now there is Xmas and things are crazy busy! :0)
Anyway I thought well at least if someone else can learn by my mistake!"The meaning of life is to be happy and useful" Tenzin Gyatso the 14th Dalai Lama
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Stress is a factor for me....what is that about July? Oh if your American you guys have that Xmas in July thing. We don't get into that here.
"The meaning of life is to be happy and useful" Tenzin Gyatso the 14th Dalai Lama
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