NOTE: If you need to type in a password to even get into Windows to do the following, make sure you attached an external keyboard first, to get past the password. Then disconnect the external keyboard and try the following...
1. Uninstall the keyboard driver.
2. Reboot the computer (without reinstalling the driver).
3. When it restarts, it should reinstall the driver on its own.
If this doesn't work, you may wish to try connecting an external keyboard and see if it works fine. If it does, then it could be the keys themselves that are the issue.
You may also want to try updating the Synaptics Driver if the above doesn't help.
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Th67ank you for your re3-0PLY UNFORTUNATE3;ly none3 OF TH67E3 fixe3S2 WORKE3d as2 you can s2e3E3 th67E3 ke3YBOARD IS2 S2TILL NOT WORKING54. iT WAS2 FINE3 ye3S2TE3rday... unus2able3 AT TH67E3 mome3NT