How do i unfreeze my keyboard (vaio laptop) rebooting has not worked and now it is asking me for my password to log on and i cannot as my keyboard has frozen!

Go into system, find the wi-fi adapter and open it up. Choose uninstall and click on it. If windows asks you if you want to remove the software from the hard drive say no. Wait for uninstall to complete than shut down the computer, shut down, not reboot. Wait a couple of minutes than turn it back on, sign in and let windows find and reinstall the driver. It now should work. 9 times out of 10 this corrects this issue.

I’m happy to help further over the phone at https://www.6ya.com/expert/david_c087e4b7d13c0163

Check theses:
1- CapsLock.
2- NumLocks.
3- Keyboard Layout (AZERTY / QWERTY).

if not working then :
1- Get Hiren's Boot CD from then intrenet, it's an ISO file.
2- Burn that ISO on a CD.
3- reboot your machine with that CD.
4- On the menu that appears choose to reset windows password.
Reboot, the password is none just type enter.

Good Luck.

When this happens, you should fully disassemble the laptop & thoroughly inspect its inside. Look for any traces of liquid on the circuit boards & on other components. On circuit boards, liquid damage appears in the form of whitish traces. These needs to be wiped off. This can be done using a tooth brush moistened with few drops of hand sanitizer liquid.
Check all internal connectors & make sure that no liquid seeped into them. Dry them if needed.
When you are done, re-assemble back the laptop.
If the liquid fell on the keyboard & you found out that the keyboard is no longer working, then you will have to replace the keyboard.

try using an external keyborad buy a usb keyboard...

Boot from the install DVD. Go into Utilities. Go into Reset Password. Don't reset any passwords, just get into one of the screens where it lets you type things into a field. If the lower-case o doesn't work here, you have a keyboard hardware problem If it does:
Reboot normally, go into System Preferences / Accounts, and define a new temporary user account. Log out and log in as that user. See if the lower-case O works. If it does, you likely have a bad setting for keyboard type in System Preferences / International in your main user account.

Try booting to safe mode (F8 when you see the Sony window), and sign on as administrator. Go to the control panel and see if there is a password for your account name.

please change your key board than restart ur pc

If you have admin login, you should be able to use this to set up another admin account or a user account.

Try pressing F8 on startup and try and login to the computer.

as soon as you turn on the computer use the f8 key, then switch boot mode

You can try logged as administrator and check on your current account see if any password changes.