My ENTER key not working

[Sterben]

I have an HP ProBook4445s. Recently it got infested by ants overnight without me knowing the next day when I opened my laptop Enter key isnt working. Ive tried the "pop the key and use alcohol to clean" but its still not working also tried sticky keys and other tricks its still doesnt. please help

[KNRK]

Dear Customer,

Welcome and Thank you for posting your query on HP Support Forum

It looks like you are having issues with the Keyboard on your Notebook.

We will surely assist you with this.

Let’s start with a questions:
1. Was there any liquid split on the Notebook Keyboard

2. Is there any Dust settled on the Notebook Keyboard

3. Are there any Keys which are fallen off / Any Keys which are loose

Troubleshooting:
Step 01. Could you please check and verify if External Keyboard works fine or not? If it works we need to replace the Notebook Keyboard

Note: Please click on the below shown link to find more troubleshooting steps
http://support.hp.com/us-en/document/c03738933

Hope this helps, for any further queries reply to the post and feel free to join us again

**Click the KUDOS star on left to say Thanks**

Make it easier for other people to find solutions by marking a Reply 'Accept as Solution' if it solves your problem.

Thank You,
K N R K
I work on behalf of HP

[Sterben]

1 & 2 yea but 3 nope and btw i have win 7 home premium not win 8

[KNRK]

Did you test your notebook with an external keyboard or not. If yes could you please tell me if all the keys worked or not ??

Regards
KNRK
I work on behalf of HP

[Sterben]

 i dont have an external keyboard but what i can say is that all the keys are working properly except the enter 

[KNRK · Accepted solution]

Please contact a local technician at your place with your Notebook and request with them to connect an external

keyboard to your Notebook and check if all the keys are working normal

OR

Please contact the point of purchase where you bought the Notebook from and request with them to connect an

external keyboard to your Notebook and check if all the keys are working normal

OR 

You can borrow an external keyboard from your friends if possible, just for testing purpose

Note: I am insisting you to perform this step to confirm the hardware fault with the "Enter Key" on your Notebook

Hope this helps, for any further queries reply to the post and feel free to join us again

**Click the KUDOS star on left to say Thanks**

Make it easier for other people to find solutions by marking a Reply 'Accept as Solution' if it solves your problem.

Thank You,

K N R K

I work on behalf of HP