Individual keys do not work anymore (laptop)?

Ca
- in Asus
1

A few keys on my ASUS X550JX no longer work. In the morning / when it was switched off for more than 8 hours, the affected keys do not work at all, but if I press them down several times and they "warm up", they partially work again. Has anyone had any experience with this problem and can help me?

I'm happy about every answer

Ca

Thank you, I will try to clean it.