When I play the first GRAW on the PC I sometimes get a black screen.

Example: I was just playing 30 minutes ago and I was in the city under a palm tree firing at the mexican rebels. And when I zoomed in and looked up to find the sniper, My screen kind of goes black and then I only see the stock, scope, silencer, and magazine of my gun. And it happens alot does anybody know what my problem is?

My rig is as following

Intel E2160 1.8Ghz Dual-Core
MSI Nvidia 8600gt 256mb
2Gb of RAM
Vista 32-Bit

Should I lower the resolution maybe? or change the aspect ratio? Please somebody help me I cant beat the mission because I cant see half the time!

Thanks Guys

Sounds like the Oblivion Black screen problem
are you using HDR?
Does your Video Card have an AGP-PCI-E external bridge chip. my old card did and I found that the heat sink on this chip was not seated properly with heat sinking compound. As soon as I fixed that the Black screen problem went away. If you are brave and very careful you could make sure all your heat sinks are clean and well seated.

Cleaning heat sinks