Hello, could anyone try troubleshoot why my dram stick died overnight?

I have

4400 2×8 gb patriot viper

4000 2×8 gb patriot viper

Not ideal , i bought it like that. Pc worked for years. Suddenly , one ram stick died.

All slots work fine, i can boot pc with 3 sticks ,but when i insert the last one, no response. Anytime i insert the one specific stick, it makes all sticks not functional. Is it just dead?

Any tips what to try? Thank you