My pc restarts when telephone rings?

I have a an adsl connection using a usb modem
I have a phone connected in the splitter and also an other phone in an other plug with a filter attached
Some times when the phone ring the pc suddenly restarts
I dont know why this happens
I changed the filters but nothing seems to change
Is it a matter of the modem, the phone line, the pc??
I'm confused
Thanks for any of your answers

Ask your phone company if they are padding the coils that bring your phone/dsl line, if they aren't padding it too much information is coming through to your computer. It could just be that they missed the padding on the line outside your house (or maybe it was put up before they started this practice). If this is happening then your computer's processor is being overloaded and can't handle it, causing the shut down when the phone rings.

hi! I think that the "ring turn on" option is enable. Verify it in the bios menu: turn up your pc end hit DEL or F2 or F10 or F11 to enter to the bios menu (the way to enter in is different from some pc's manufactures to other). In the bios menu select periperical or some sounds like advanced periferics. Disable the "ring turn on" and save, reboot the pc and try shutting down and calling to that number. Good luck!