LCD monitor - noise/hum ?

[jbobonline]

After years of reliable use my old CRT monitor died. So I bought a new LG 20 inch lcd:

1. The res/picture qulaity seems about same as my old CRT - I assume due to the following: a) I have res set at 1024x768 (the recommended 1680 x 1050 makes the font really small which I don't like); b) I am connected via VGA not DVI (no DVI slot on my computer). Does this seem right or is there another reason wht res is same as old CRT?

2. I found the screen a little bright so turned down the brightness setting from max (100) to around 75. When I did I found that the monitor produced an annoying hum/buzz (goes away when turn back to brightness max 100). Is this a defective monitor or do all LCDs do this?

3. Is it worth upgrading my video card to allow DVI connection (I assume this is how I would do it???) and buying a DVI cable to get higher res?

Thanks!

Specs:
XP SP3
http://ca.lge.com/en/products/model/detail/20inchlcdmonitors_w2052tqtf.jhtml

 

[Anon_F]

Is your PC close the the monitor?
As this could be causing the humming?

 

[Ian]

I'm not sure what could be causing the humming problem, is it just a faint noise or something quite noticeable? I've got a 22" LG with brightness at 80% and it's silent

You can get better picture quality by changing the resolution to the recommended level, but increasing the font size in the control panel.

 

[TriplexDread]

I know on the older CRT's if you went too high on the refresh they used to squeal but as for LCD's hmmmm

Does it have an internal PSU?