New Acer monitor won't work

Hi,

I just bought a new V193HQV Acer monitor, but it won't display properly.

I've connected it to a power supply and to the port with the |O| symbol, as well as the one marked CRT (which is connected to the graphics card, the other one connects to the motherboard - unsure which one is right, both fit). But all it does is that it divides the screen into three square parts, aligned next to eachother, either black or scrambled with colours. It does the same if it isn't connected to the computer.

My old monitor is a CRT-model, with 1280*1024 max resolution, the new one has 1360*768. I tried setting it to 800*600 on my old one, then reconnecting the new one but there wasn't any difference.

Any clue what I can do? Thanks

Edit: I should add that I have a Radeon 4600 HD with the latest drivers. Cheers
 
"It does the same if it isn't connected to the computer"... Return the new monitor and get a replacement
 
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