I have a PCChips mainboard M748LMRT without keyboard attached system don't POST because it say "keyboard locked".
What's the way to fix that ?

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Best regards,
DRX.

Hi DRX,

You should hook up your keyboard. The computer looks for a keyboard during the post. If it's not there you get an error message. Being probably the most important peripheral, a computer constantly scans for a keyboard. If it can't find one you will get an error message.

And please make sure the computer is OFF whenever you connect or disconnect your keyboard.

Hope it helps. http://www.PCGuide.com/ubb/smile.gif

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Peace and Love, brothers and sisters. Peace and Love

[This message has been edited by Steve (edited 06-18-2002).]

And please make sure the computer is OFF whenever you connect or disconnect your keyboard.

Can't emphasize that strongly enough. The reason being, PS/2 mouse and keyboard can and will fry their respective circuitry if plugged in or unplugged while the computer has power. When that happens it's time to go shopping for a new motherboard.

Some cases have a main power switch on back, look for one. Some don't have a main power switch, in that case you need to unplug the power cable from the wall. Either way, making sure the computer has NO power is very important when plugging in or unplugging PS/2 devices.

Good point Steve...

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If your nose runs and your feet smell...
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Computer Information Links (http://www.dreamwater.com/paleopete/computer.htm) has been moved, please update your bookmarks.

The problem is the same ... with keyboard or without keyboard the system don't boot. How's the trick ?

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Best regards,
DRX.

Are you sure you have a working keyboard?

Download the manual for it Here (http://www.pcchips.com.tw/M748LMRT.html) if you don't have one already. Check for a jumper to clear CMOS, then try it again. I suspect the keyboard is locked out in BIOS. You might try to get into BIOS before you see the error message, and see if you can reset the keyboard option there before clearing CMOS.

The manual should have info on clearing CMOS, and might have some BIOS instructions too.

------------------
If your nose runs and your feet smell...
You're built upside down!
Note: Please post your questions on the forums, not in my email.

Computer Information Links (http://www.dreamwater.com/paleopete/computer.htm) has been moved, please update your bookmarks.

DRX,

Is there a key lock on your computer? What I mean is, do you actually need a key to get it to boot?

While looking around for info I came across THIS (http://www.pcguide.com/ts/x/sys/booterr.htm) link. Scroll the frame on the left down until you see "keyboard locked" and click on it.

Let us know if it helps. http://www.PCGuide.com/ubb/smile.gif

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Peace and Love, brothers and sisters. Peace and Love

The bios don't have set to keyboard lock. The keyboard is normally not PS/2
I have manual and I reset CMOS more than once , I also remove CMOS battery from mainboard.
I disasemble mainboard from the case and it's alimented out , without front panel ( power led , hdd led , reset sw).
I have a card test plugged in PCI slot and POST it's halted at 85h - AMI bios.
I don't know where is the gate !

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Best regards,
DRX.

Hi DRX, have you tried a different keyboard? Did you check out the link I posted?

I don't know where is the gate !


What gate do you mean?


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Peace and Love, brothers and sisters. Peace and Love

Hi Steve , thank's for reply I saw your link ,but i think that's a malfunction of mainboard .
I didn't fix it

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Best regards,
DRX.

I wish I knew what to tell you, but I'm stumped. (not an uncommon occurance http://www.PCGuide.com/ubb/rolleyes.gif ) Maybe some of the others might have some suggestions.

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Peace and Love, brothers and sisters. Peace and Love

The MB may be faulty.

Hello DRX

Ever now and again I get this problem and I always manage to get past it but I've never figured out the cause or the solution.
I do have a key lock which connects to a set of jumpers on the motherboard and to eliminate that as a cause I fitted a jumper permanently in place so that the keyboard could never be locked out. The problem still occurs on infrequent occasions. I give the plug on the back a wiggle, or pull it out and push it back in or wiggle the wiring at the keyboard end, then press reset and it takes about two to four attempts before it gets past that point and completes the boot process. This could suggest poor connections but I'm unconvinced.