I have a PC connected to a TV using an SVideo cable plugged into a scart. I usually turn the TV on, set it to AV, and then tell windows to extend desktop to TV so I can use WMP on it to watch movies/etc.

I have been to a friends house using his monitor for my PC. I didn't change drivers. I didn't change settings. I come back, plug everything in again.

Problem:

It doesn't work any more. The TV isn't detected. Setting extended desktop has no effect, even after applying. Forcing TV detection doesn't help. Everything is plugged in. The scart does work as I can hear sound on it when I play winamp (I have audio cables to hear PC sound on TV when I want). What has happened?

I even updated my Catalysts but that didn't do anything to help.

try to connect onyl the TV switch to AV channel then start PC when nothing happens restart it blindly and hope