MSI users are allowed to void the warranty sticker to upgrade the RAM, HDD, swap out batteries, and also for cleaning purposes.
Removing the warranty sticker doesn't change anything in terms of the warranty rules.
However, please note that any hypothetical damages which may occur during mentioned actions will not be covered under manufacturer's warranty (for e.g. Scratches, broken pieces, damaged pins etc.). This must be done gently.
With that being said, we would strongly recommend you to have your product upgraded by our authorized service center/ distributor to avoid further issues.
Kindly refer to the following link to locate the nearest server center in your vicinity.