Please Help: Can’t get GeForce 6200 to deliver 1920x1080p Res on Samsung HDTV

Problem Summery: Can't get Inno3D GeForce 6200 to deliver 1920x1080p (Full-HD) Resolution on Samsung LA40B530 Series-5 40 LCD HDTV

COMPUTER SPECS:
2.8Ghz HT Intel Pentium 4
2.5GB RAM
AGP 256MB Inno3D GeForce 6200 (h t t p://www.inno3d.com/products/graphic_card/gf6_agp/6200.htm)
OS: Windows XP Pro SP3
NVIDIA Driver version: 197.13 WHQL (Date: 2010.03.25) (h t t p://www.nvidia.com/object/winxp_197.13_whql.html)

CONNECTORS:
24K Gold Plated DVI to HDMI 1.5 Meter Cable
h t t p://cgi.ebay.com.au/ws/eBayISAPI.dll?ViewItem&item=200458062612&ssPageName=ADME:L:OU:AU:1123l

HDTV Specs:
Samsung LA40B530 - 40 LCD Full-HD (1920x1080p) TV
http://www.samsung.com/au/consumer/tv-audio-video/television/lcd-tv/LA40B530P7FXXY/index.idx?pagetype=prd_detail&tab=spec&fullspec=F

Problem Details:
Unable to get the Full-HD (1920x1080p) Resolution from GeForce 6200 to Samsung LA40B530 LCD HDTV. Currently running at 1680x1050. Both Windows Display Dialog-Box and NVIDIA control panel show that the GeForce Found and Connected to Samsung HDTV. NVIDIA control panel list Resolution 1920x1080p @ 60Hz as HDTV well as 1920x1080 as LCD Monitor. If select 1920x1080p from HDTV Resolution or 1920x1080 from LCD Resolution, color of the display get distorted and the windows start menu bar and upper section of the screen gets outside the LCD Display area. i.e the desktop gets chopped off, and the color gets distorted.

All other resolution works fine, up to 1680x1050. Problem only occurs at 1920x1080p or 1920x1080.

I have tried making/adding various custom resolutions, and tested them out. But the problem still occurs and only seems to occur at 1920x1080p or 1920x1080.


Any idea, what I can try or do to fix the problem?


Thanks.

You might be right. GF6200 might be under-powered. but according to NVDIA's and Inno3D's Specs page, the card should support 2048 × 1536 at 85Hz
www.nvidia.com/object/geforce6_techspecs.html

Tried it all, as Extended Screen, Dual Clone and Primary Monitor (disconnecting the other monitor completely) nothing works.

Make and Model of the other monitor is:
Dell 17" LCD Monitor runs at 1280x1020 @ 60Hz

I am using a 1.5Meter DVI to HDMI cable to connect PC to the HDTV.