Hey guys. Just wanna ask, I have this weird problem with my Samsung T220.

When I switch my PC on, the PC starts normally but the monitor states digital, analog, digital, analog, until it sleeps. I doesn't display anything. I took off my graphic card to clean it, and switch ends for the DVI cable but it still happens. But only sometimes. Like 1 day works ok, then the other ko. LOL.

Can anyone help me on this? Really appreciate it. Thanks