techsupport

I've done that -- if it was just water, and not a sticky/sweet drink or juice, your chances for a full recovery are good, if you thoroughly dry it out. Tap water, depending on where you live, might have some minerals that could cause trouble but if it was clean you might not have shorted anything out.

If you can't take it fully apart (which would be best), let it dry even longer if you can, but first hold it upside-down firmly and shake vigorously for a minute or so ... if there's still any water in there, more should come out that way. Then let it dry for another day. If there was already gunk inside the keyboard, the water may have shifted it around, and made some of it adhere to moving parts, so you might want to use a can of compressed air to blow around and under each and every key.

I've seen some keyboards take full immersion and keep working after drying up. I've seen others break or partially break after a bit of coffee spillage.

Sincerely just depends on how the keyboard was constructed and a bit of luck.

Just dry it off as best you can, then let dry on one side in full sun for a day, flip and let dry on the other side the next day. Plugin and try on day 3.

If it was just plain water the chances are very good it will work just fine if you can dry it completely. Pure water is non-conductive.

If it had additives like flavoring or sweetener there might be some trouble because those could leave a conductive residue. Even in that case the chances are slim that a malfunctioning keyboard would damage your PC. The most likely outcome is that it sends extraneous characters or some keys don't respond.

With water you're generally fine. Might take a day or two. Put it in front of a fan or vent or something if you're feeling extra cautious.

Edit: no, it's very unlikely that it can causeway damage to your PC