Just got a new PC with windows 7. ATI radeon 5850, 4 gigs ram, AMD phenom triple core.
A couple days ago, the monitor (21" LG flatron, about a year old) starts going off for a second then coming back on, then maybe 15 seconds later off again. Sometimes more frequently, sometimes less. I unplugged the dvi cable from the monitor and back of PC, and now it won’t even come on again. The power lights work.
So, I switched out this monitor for my 7 year old 19" viewsonic. The viewsonic works fine. No problems, so it’s not the computer.
I connected the LG monitor to my second computer and it now also works fine. Stays on.
What could the problem be?