XPS M1210 Video Problem

I have an XPS M1210 and am running Windows Vista Ultimate Edition. For some time now the video has been malfunctioning; the screen will go black apart from the mouse cursor. This seems to occur when:

• I shut the lid and then immediately reopen it.
• I have an external monitor attached via the CRT connection. Often, when I shut the lid of the laptop, the desktop will switch over to the external display and the video will malfunction.
• At times, when I exit out of the Media Center, the video will malfunction.
• When I open the lid of the laptop, while the main desktop is on the external display, the video will malfunction.

The only way to fix the problem is to manually power the computer down and then reboot. When the video malfunctions, I can hit the standby key and the video will flash back on right before going into standby. Coming out of standby the screen is still black apart from the mouse cursor.

I have the most recent drivers and updates installed. I have installed and reinstalled multiple versions of the video driver for the Nvidia GeForce Go 7400 from Dell's website with no success.

I have the same problem with my Latitude XT Tablet PC. It is running Windows Vista Enterprise Edition and integrated ATI Radeon Mobility X1250 Below I attached the configuration files for both systems:

XPS M1210

1 MJ450 PROCESSOR..., MEROM, T7200, 2.0, 4MB, DIRECT CURRENT..., BURN 2... 1 DF771 CORD..., POWER..., 125, 1M, C7, 2P, DUAL..., UNITED STATES... 1 NG734 KEYBOARD..., 84, UNITED STATES..., ENGLAND/ENGLISH..., SINGLE POINTING..., SILVER... 1 DF263 ASSEMBLY..., ADAPTER..., ALTERNATING CURRENT..., 65W, MOBILE 2007..., LITEON..., WORLD WIDE... 1 KJ485 KIT..., COMPACT DISKETTE..., MTG3, M3 1 RG894 KIT..., SOFTWARE..., APPLICATION..., SONIC SOLUTIONS..., CINEPLAYER... 1 RJ421 CARD (CIRCUIT)..., WIRELESS..., LEAD FREE..., INTERNAL..., BLUETOOTH..., 355 1 FK454 KIT..., EARPHONE..., BUDS, NOTEBOOK... 1 GR343 KIT..., SOFTWARE..., OVERPACK..., WINDOWS XP..., MCE05U, DIGITAL VIDEO DISK DRIVE..., ENGLAND/ENGLISH... 1 HJ678 ASSEMBLY..., LIQUID CRYSTAL DISPLAY..., 12.1WX, W/CMRA, M1210 1 YH671 ASSEMBLY..., COVER..., HINGE..., W/CMRA, M1210 1 RC449 HARD DRIVE..., 100G, 9.5, 7.2, Serial ATA..., HITACHI GLOBAL STORAGE TECHNOLOGIES..., MORAGA PLUS... 1 DY654 KIT..., SOFTWARE..., WORKS..., 8.5, OFFICE..., TRIAL, ENGLAND/ENGLISH... 1 NJ449 CARD (CIRCUIT)..., WIRELESS..., MINICARD..., DW1500, MULTIPLE INPUT MULTIPLE OUTPUT... 1 RG240 KIT..., SOFTWARE..., MCAFEE..., 7, COMPACT DISK DRIVE..., ENGLAND/ENGLISH... 1 UJ367 ASSEMBLY..., DVD+/-RW..., 8X, IDE (INTEGRATED DRIVE ELECTRONICS) ..., TOSHIBA SAMSUNG STORAGE TECHNOLOGY... 2 Y9530 DUAL IN-LINE MEMORY MODULE..., 1GB, 667, 128X64, 8K, 200 1 YF080 BATTERY..., PRIMARY..., 53W, 6C, LITHIUM..., SIMPLO 1 FP985 ASSEMBLY..., BASE (ASSEMBLY OR GROUP)..., NOTEBOOK..., DISCR, XPS-M1210 1 UH112 ASSEMBLY..., HEATSINK..., PLASTIC GRID ARRAY..., DISCRETE..., M1210

Latitude XT

1 FN007 ASSEMBLY..., BASE (ASSEMBLY OR GROUP)..., U7600, 12.1WX, DLV, ATI GRAPHICS CARD... 1 YK181 GUIDE..., PRODUCT..., INFORMATION..., CLIENT..., DAO/BCC 1 XN166 KIT..., STYLUS..., PEN, TIPS, TOOL..., TETHR, ATI GRAPHICS CARD... 0 01323 INFORMATION..., NO ITEM 1 YT886 ASSEMBLY..., ADAPTER..., ALTERNATING CURRENT..., 65W, FLEXTRONICS..., 2P, WORLD WIDE... 1 WU669 KIT..., SOFTWARE..., OVERPACK..., XP TABLET..., DIGITAL VIDEO DISK DRIVE..., ENGLAND/ENGLISH... 1 RW571 KEYBOARD..., 84, UNITED STATES..., ENGLAND/ENGLISH..., DUAL POINTING..., MRT 1 WR015 BATTERY..., PRIMARY..., 42WHR, 6C, LITHIUM..., SANYO 1 HX400 BRACKET..., HARD DRIVE..., METAL..., NOTEBOOK..., ATI GRAPHICS CARD... 1 JN190 ASSEMBLY..., CABLE..., HARD DRIVE..., NOTEBOOK..., ATI GRAPHICS CARD... 1 JN526 HARD DRIVE..., 80GB, PARALLEL ADVANCED TECHNOLOGY ATTACHMENT..., 8MM, 4.2K, SMALL FORM FACTOR..., T050 1 JW351 KIT..., DOCUMENTATON ON FLOPPY DISK..., POWERDVD..., 7.0, DIGITAL VIDEO DISK DRIVE... 1 Y9530 DUAL IN-LINE MEMORY MODULE..., 1GB, 667, 128X64, 8K, 200 1 TW039 ASSEMBLY..., DVD+/-RW..., 8X, D MODULES..., NON-FACTORY INSTALLED..., HITACHI LG DATA STORAGE... 1 NW164 GUIDE..., CARD (DOCUMENT)..., REFERENCE..., LATCHED ADDRESS..., ATI GRAPHICS CARD..., ENCRYPTED... 1 WN545 KIT..., SOFTWARE..., Adobe Acrobat..., 8.1, ENGLAND/ENGLISH... 1 DF771 CORD..., POWER..., 125, 1M, C7, 2P, DUAL..., UNITED STATES... 1 HY157 CARD (CIRCUIT)..., WIRELESS..., LEAD FREE..., INTERNAL..., BLUETOOTH..., DW360 1 PC559 CARD (CIRCUIT)..., WIRELESS..., MINICARD..., DW1390, BROADCOM CORPORATION... 1 YY660 KIT..., SOFTWARE..., OFCBSC-2K7, ENGLAND/ENGLISH..., DELL AMERICAS ORGANIZATION...