IP address conflict problem

Hi, i use 3 computers on the same network at home, i set up a static ip adresses for all of them.
Everything was working fine until a few days ago, when i got this error "IP address conflict".
Nothing was installed or changed, i've checked the static ip adress of each station and all of the are different, ending in different values.

I tried to change them again to a different adress, restarting the router, updating the Firmware of the router and nothing works.

What can fix it?
tnx!

 

First we need to know what kinda setup is it wireless, wired and what router are you talking about to know for sure what is going on. The info you gave is to general to be of help.

 

Are there any other machines connecting to your router?
Maybe the latter, erroneously assigns them one or more of your static addresses via DHCP.

If you can, make reservations for your static addresses in your router's config.