Problem with my laptop Toshiba satellite pro A60

when i switch it on, a sound appears as if a key is pressed while the laptop is on booting process, it takes sometimes then windows Xp starts up successfully. When i open MS word, the letter "e" writes on the empty document automatically that it keeps on writing eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee as if somebody keeps on pressing the key "E" on the keyboard. I tried to clean the keyboard, on the key "E" nothing helps.

Any ideas how to solve this problem?

you'll need to check keyboard connection to MB. if it firmly connected, then replace the keyboard. it's a stuck key failure,