Originally Posted by Hyph
This isn't current practice and places unnecessary load on the computer PSU.
Sorry, but that is not quite correct correct. The female IEC connection on the PSU places no load on it as it is an extension port and as such does not draw current from the PSU. In other words it is a single point power board/power strip (depends on your country and terminology for the device). The PSU can go
BANG but the IEC connector may still work.
One thing I would suggest it to make sure the video resolution is set to 60Hz before connecting the LCD. While many will autodetect and change a higher resolution, some don't and it will result in no video since it may be running at a rate the LCD can't handle. Newer LCDs can also handle 72Hz but I have yet to see one run higher than that (not saying they don't exist, just that I haven't seen one yet).