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It means the key with letter 'J' was malfunctioned in the keyboard. When you open a console or notepad it goes continuously by printing the letter 'J' on the screen or sometimes you will get continuous beep.
This problem can be rectified by replacing the keyboard.
Keyboards on Windows computers can repeat letters when key press sensitivity is too high. This problem can be rectified by adjusting your keyboard's repeat frequency. Once this is lowered, key presses will occur slower and you will not have the letters repeated instantly.
Click"Start," then "Control Panel." Click "Hardware and Sound," followed by "Keyboard." Move the "Repeat delay" slider further to the left below the "Character repeat" option. The further left the slider moves, the longer the delay will be before a character repeats.
The key might be sticking down, which is probably a defect in the product. I tested an ihome keyboard (Bluetooth) and everything except the spacebar was prone to sticking itself down, no pop spill or nothing. So, I recommend to return the keyboard if you still have the receipt and get a Bluetooth Apple keyboard instead, as ihome is good for their docks, but their keyboards suck!
HP laptops have the ability to lock the blue special function keys on, making numerical data entry easier on laptop models that do not have the room for dedicated numerical keypads. Because the key combination to lock the function keys is so simple, however, it is easy for those who wouldn't normally use this ability to do so accidentally. When the function keys are locked, pressing certain keys will result in numbers being typed rather than letters. Unlock the function keys to alleviate this issue.
Press the "Fn" and "Num Lk" keys on the keyboard simultaneously. The "Number Lock" indicator light should turn off, indicating that the letter keys will once again type letters when pressed. This combination should work on the majority of recent HP laptops. If it does not, try one of the alternate key combinations in this article's remaining steps. Press the "Fn" and "F11" keys simultaneously, then attempt to type a letter. If the combination does not work, continue to the next step. Press the "Fn" and "Scroll Lock" keys simultaneously, then attempt to type a letter. Continue to the next step if this does not work. Press the "Fn," "Scroll Lock" and "F11" keys simultaneously.
Please check the ink ribbon. There are two types of ribbons. The plastic one can be used once and if you try it the second time then there is no guarantee that all letters will appear fine and legible. (as may be happening in your case). The other is the cloth ribbon. This can be reused and it keeps fading as you keep repeating it. But in this case all letters are faded and nor selective.
Re: CP2025 cleaning at every possible moment
Talked to HP support and fixed mine by changing Settings/Paper Handling/Tray 2 Type to "Heavy 111-130g"
All paper handling settings as follows:
Default Paper Size:
Default Paper Type:
Tray 1 Size:
Tray 1 Type:
Tray 2 Size:
Tray 2 Type:
Paper Out Handling
Specify Time and Action
Paper Out Time:
Paper Out Action: