Strange problem

Hello,
As I'm french, I'll try to be clear and simple.
Since tomorrow I cannot play due to a strange probleme that occured suddenly this day. I played all night long withouy any problemn but today, when I launch L2, my screen make like an electronic disturbance, and I cannot see anything.
I have a message on my screen that says :"Invalid Scan Freq."

If I use ctrl+alt+del I can close L2 and continue my session as if nothing has happend. I tried to change tje frequecy of my monitor bur nothing works.

All other games work perfectly, my graphic card is a Nvidia 7800GT and I use the latest driver. I tried to unistall and then re-install the game, it worked once and I could play, but if I leave the game I cannot comme back, I have the same problem again.

I cant uninstall and reinstall each time I want to play L2.
Does anyone have an idea please ?

Try to lower ur Refreshrate in Windows. Maybe ur Monitor is not working with the Refreshrate + Resolution.

If thats not working go into the L2 System Dir and open the Option.ini. There is a Line called "RefreshRate=???"
try to set it to like 60 and save it.
Maybe that helps, or it is only a problem with the resolution dunno ^^

btw.. have a strage Problem too... like when i Sweep a mob the client crashes... (okok... bad joke ^^)

I have played with this monitor for a long time, this just happend suddenly ond only for L2. All other games work perfectly. I tried what you suggested but it didnt work.