..Your last post said: "I used Vista and i reformated to XP." and you didn't fill us in on the computer originally being XP, then upgraded to Vista,(or maybe you formatted and installed Vista but you didn't say that either??) then reformatted and reinstalled XP again...
Q: "The keyboard problem shows up when the computer had Vista installed AND when XP is installed?" Yes/No..?
Q: "You installed a separate, remote keyboard on the laptop and it also had a problem?" Yes/NO? What type of connection did the remote keyboard have?
Q: "please tell us which drivers you installed when you formatted and downgraded XP." You then stated: "When i reformated i didnt install a single driver for anything so i wouldnt mess anything up."
An important point about your statement... If you installed XP WITHOUT installing any drivers, then the machine wouldn't run worth a darn.. Poor video, no audio, no internet connection, etc.. I'm guessing that you also haven't told us you used the computer RECOVERY DISCS to reformat and reinstall ALL of the software onto the computer.. Is that correct? If it is, then the drivers are installed... If it's not, and you only reformatted the computer and reinstalled XP using an XP installation disc, then it's clear why you're having problems.. YOU NEED TO INSTALL all of the hardware drivers for your computer.
Either way, have you checked for updated keyboard drivers for your Sony computer model...? As mentioned before, if the driver isn't right, a new one "might" fix it....depending on the answer to all of the questions above.
Hope this helps.