Graphics hiccup with new computer and 11.4

I have just bought a new PC, which uses the integrated graphics built into the motherboard rather than a graphics card. I have also installed Suse 11.4, but have been disappointed by the inability to obtain good graphics when either using archived tv programmes or streaming tv.
For example, when using the BBC’s iplayer, I can get a good picture only when the screen is not maximised. If I maximise the image then the sound continues, but the picture freezes. On my old computer, using 11.1, this was not the case, since I got a good picture in either basic or maximised mode.
I’m guessing I might need a graphics card, but thought I would ask your opinion first.

I do not have much knowledge here, but I can imagine that those who have and who could help you, would be very much interested in any technical details you have about make and type of the system and the graphical hardware. Else it would be a case of looking into their crystal balls wouldn’t it?

Description Intel Core i3 2100 Processor
Cache 3MB
Clockspeed 3.10Ghz
Manufacturer Intel
No. of Cores 2
Description 2 x 2GB DDR3 1333Mhz Memory
Speed 1333Mhz
Description 500GB 6Gb/s Hard Drive
Interface SATA
Description Novatech Micro ATX Case With 350w PSU
Colour Black
Dimensions 180379406mm
Drive Bays 3 1/2" 1 External, 4 Internal
Drive Bays 5 1/4" 2
Form Factor mATX
Optical Drives
Description 22x DVD Writer
Interface SATA
Description Intel H67 Chipset Motherboard
Form Factor uATX form factor (9.6" x 8.8")
CPU Support Supports LGA 1155 for Intel Sandybridge processors
Chipset Intel H67 Chipset
Audio Supports 5.1 channel HD Audio
IO 1 x PS/2 keyboard port
1 x VGA port
1 x DVI port
1 x Audio jack supports 3 jacks
1 x RJ45 LAN port
6 x USB 2.0 ports
LAN Gigabit LAN
Socket Type 1155
USB Supports up to 12 USB 2.0 ports (Rear panel x6, pin header x3 support 6 ports)
RAID Supports SATA RAID 0, 1, 0+1, 5
SATA Ports 6 ( 2 x 6.0Gb/s / 4 x 3.0Gb/s)
PCI 2 PCIe x1 slots
PCI-EX 2 PCIe2.0 x16 slots(1x16,1x4)
Memory Slots 4
Max Memory Capacity 16GB
Keyboard & Mouse
Description Novatech Wired Keyboard And mouse
Mouse Novatech USB Wired Mouse