Check Sum Error

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Old 02-18-09, 04:26 PM
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Check Sum Error

I had some wine spilt on my laptop. It caused some problems with the mouse pad and keyboard. I disassembled the laptop and cleaned off the circuit board on the back of the mose pad with rubbing alcohol and got that working. I also pulled the keys off the keyboard and cleaned that off. My laptop pretty much works now, except Whenever I try to start it up it reads " check sum error" It prompts me to press f5 for cmos or f6 to start. Neither button works though. I have a feeling the computer's reading as if the alt button is sticking and in fact, if I hit control and delete (without even having to touch alt) it'll try to reboot. At this point I can hit escape and enter a start up menu. If I hit enter it goes back to the check sum error, but this time the f6 button works. This then boots up windows. Then keyboard doesn't work though until the computer warms up for a little while. I'm thinking I have to reinstall my keyboard driver. I talked to a tech from HP and he said I have to delete the driver and restart the computer. It's supposed to reinstall the driver at startup. I'm afraid that if I do that though and the check sum error comes back again I'll be dead in the water. Is there a way to download the driver I need off the internet to replace the damaged one? I checked HP's site and didn't find the driver I need. Otherwise, should I install another keyboard through a USB port just in case. I'm guessing that if the check sum error is caused by the keyboard and the driver's uninstalled, it should be OK, but I'm afraid to risk it.
 
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Old 02-18-09, 04:37 PM
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I doubt it's a driver issue. I'de lean more towards a bad keyboard. You can get a replacement one fairly cheap, either from HP or Fleabay.

Windows will automatically load default drivers for the keyboard, so that's not an issue.
 
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Old 02-19-09, 04:42 AM
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Try reseating the small phenolic board (looks like a plastic ribbon cable) that goes from the keyboard to the motherboard. Unsnap the locking bar, remove the board, clean it, and make sure it's seated all the way before you snap in the locking bar.
 
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Old 02-19-09, 07:56 AM
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I'd say you either didn't get a key back on right, or your keyboard is toast. I'm with Hotin on this one, just pick up a new keyboard. On the flip side, it will make your latop feel new again too!
 
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Old 02-19-09, 05:19 PM
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Yeah, but my fix is free.
 
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