Please help, problem with installing Syberia and using AOL...

[rpm604]

I bought a new PC a week ago and I am trying to install Syberia and Syberia 2... which is no problem. But after they are installed and I get in AOL... everytime I sign off of AOL, my PC reboots itself. This didn't happen on my old PC with AOL.
Any help would be appreciated...
Thanks,
Patricia