GeForce 9800 GT Win 7 crashes frequently ...

I've had a GeForce 9800 GT on Win7 64 bit for about a year with no trouble. About a month ago I got an alert from either Windows Update or the Nvidia software (I don't remember which) telling me that a driver updated was available. So I downloaded and installed it.

Since then the driver will often crash. Sometimes the screen goes blank for 5-10s and then I get a message telling me that the driver crashed and that it was able to right itself. More often, the screen just goes blank and I have no choice but to do a hard reset of the PC.

I notice that this often happens when I open a Web page on YouTube or a page with an embedded YouTube video. And it doesn't seem heat-related as it sometimes happens within a few minutes of booting.

Any recommendations or ideas?

Here is what the Nvidia tool tells me about my system. Thanks VERY much in advance,
Chris

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NVIDIA System Information report created on: 07/13/2012 04:44:43
System name: **************

[Display]
Operating System: Windows 7 Professional, 64-bit (Service Pack 1)
DirectX version: 11.0
GPU processor: GeForce 9800 GT
Driver version: 301.42
DirectX support: 10
CUDA Cores: 112
Core clock: 650 MHz
Shader clock: 1625 MHz
Memory clock: 950 MHz (1900 MHz data rate)
Memory interface: 256-bit
Total available graphics memory: 2303 MB
Dedicated video memory: 512 MB GDDR3
System video memory: 0 MB
Shared system memory: 1791 MB
Video BIOS version: 62.92.69.00.70
IRQ: 16
Bus: PCI Express x16 Gen2

[Components]

easyDaemonAPIU64.DLL 1.8.15.0 NVIDIA Update Components
WLMerger.exe 1.8.15.0 NVIDIA Update Components
daemonu.exe 1.8.15.0 NVIDIA Update Components
ComUpdatus.exe 1.8.15.0 NVIDIA Update Components
NvUpdtr.dll 1.8.15.0 NVIDIA Update Components
NvUpdt.dll 1.8.15.0 NVIDIA Update Components
nvui.dll 8.17.13.0142 NVIDIA User Experience Driver Component
nvxdsync.exe 8.17.13.0142 NVIDIA User Experience Driver Component
nvxdplcy.dll 8.17.13.0142 NVIDIA User Experience Driver Component
nvxdbat.dll 8.17.13.0142 NVIDIA User Experience Driver Component
nvxdapix.dll 8.17.13.0142 NVIDIA User Experience Driver Component
NVCPL.DLL 8.17.13.0142 NVIDIA User Experience Driver Component
nvCplUIR.dll 3.7.730.01 NVIDIA Control Panel
nvCplUI.exe 4.4.730.0 NVIDIA Control Panel
nvWSSR.dll 6.14.12.7533 NVIDIA Workstation Server
nvWSS.dll 6.14.13.0142 NVIDIA Workstation Server
nvViTvSR.dll 6.14.12.7533 NVIDIA Video Server
nvViTvS.dll 6.14.13.0142 NVIDIA Video Server
NVSTVIEW.EXE 7.17.13.0142 NVIDIA 3D Vision Photo Viewer
NVSTTEST.EXE 7.17.13.0142 NVIDIA 3D Vision Test Application
NVSTRES.DLL 7.17.13.0142 NVIDIA 3D Vision Module (0)
nvDispSR.dll 6.14.12.7533 NVIDIA Display Server
NVMCTRAY.DLL 8.17.13.0142 NVIDIA Media Center Library
nvDispS.dll 6.14.13.0142 NVIDIA Display Server
PhysX 09.12.0213 NVIDIA PhysX
NVCUDA.DLL 8.17.13.0142 NVIDIA CUDA 4.2.1 driver
nvGameSR.dll 6.14.12.7533 NVIDIA 3D Settings Server
nvGameS.dll 6.14.13.0142 NVIDIA 3D Settings Server

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