Samsung LCD TV display issue

Hey guys,

After spending hours trying to fix this issue myself I figure the next best thing to do is to ask.

Currently having resolution issues with my 26" Samsung LCD TV (Model #LN26B360C5D) when used with an older Dell Dimension 3100 PC with Windows 7 Ultimate, SP1.

After a re-install of Windows 7 done by a colleague, for some reason my TV won't display it's native resolution of 1366x768 which I'm almost 100 percent sure it had before because I didn't notice any distortion or quality loss. I checked the drivers of both the monitor and the adapter and they read as follows:

Adapter - Standard VGA Graphics Adapter
Monitor - Generic PnP Monitor

When I first plugged the VGA cable into the PC, after the re-install, a Samsung driver option appeared and then quickly changed itself to the Generic PnP driver. I have searched all over the web and cannot find the corresponding PC driver from Windows that will work with my TV (if that is even the issue). I also tried booting in Safe Mode and into low-resolution 640x480 and changing the resolution manually hoping that would work but it didn't. There are several Samsung drivers on the PC when I deselect the option "show compatible hardware" in the screen resolution window but I can't figure out which driver works for my tv.

I've tried pretty much everything and I thank you guys all in advance for the help but I have no idea where to go from here....