How To Fix Laptop Keyboard Keys Typing Wrong Characters. Look for a small key that says some variation of Num Lock NumLk or even a small lock symbol with a number 1 inside. Now try to type the letters UIP etc and it will work fine.
Remove all external devices from the system. If the issue does not occur after removing all external devices attach one device at a time to find out which device is causing the issue. Now try to type the letters UIP etc and it will work fine.
Remove all external devices from the system.
SuperUser contributors Aibobot Rizal Pahlevi and plugwash have the answer for us. Acer Aspire 4739Z Laptop keyboard typing wrong letters Fix. Install the updated driver software via Device Manager at Step 3. Bingo the problem has been solved.
