PBS Nova doesn't go fullscreen - videocard?

PBS Nova doesn't go fullscreen - shows white screen, though it does fullscreen on a small monitor. Most likely - onboard videocard of this very old 2003 PC (the latest video driver is circa 2005). Will try upgrading the card - colors are horrible after I hoked up 16/9 720p 32" TV.

On 4/3 15" monitor I didn't have a chance to notice colours, but fullscreen worked OK.

In Canada many channels are restricted - don't open (Hulu and some PBS channels). SPIKE TV opens, and goes fullscreen on same 16/9 TV, same videocard. Go figure...

System Name: HP70043262216
[Display]

Item Value
Name Intel(R) 82865G Graphics Controller
PNP Device ID PCI\VEN_8086&DEV_2572&SUBSYS_12BC103C&REV_02\3&61AAA01&0&10
Adapter Type Intel(R) 82865G Graphics Controller, Intel Corporation compatible
Adapter Description Intel(R) 82865G Graphics Controller
Adapter RAM 96.00 MB (100,663,296 bytes)
Installed Drivers ialmrnt5.dll
Driver Version 6.14.10.4396
INF File oem36.inf (i865G section)
Color Planes 1
Color Table Entries 4294967296
Resolution 1280 x 768 x 75 hertz
Bits/Pixel 32
Memory Address 0xF0000000-0xF7FFFFFF
Memory Address 0xF8400000-0xF847FFFF
I/O Port 0x000014E0-0x000014E7
IRQ Channel IRQ 16
I/O Port 0x000003B0-0x000003BB
I/O Port 0x000003C0-0x000003DF
Memory Address 0xA0000-0xBFFFF
Driver c:\windows\system32\drivers\ialmnt5.sys (6.14.10.4396, 1.24 MB (1,302,332 bytes), 3/13/2003 12:13 PM)