Dell XPS M1730 - Problems with LCD on battery

[BantaY]

Hello everyone,,
I have the following problem. After I had no picture with my XPS on battery power, according to Dell I should replace the driver for my GK (2x nvidea 8700GT) and install a fresh BIOS. Unfortunately, the recommended GK driver does not harmonize with the SLI mode, so I only have half the power in mains operation. But the picture comes on battery power. If I take the old driver that was on the device again, the picture does not come back and the performance is 100% OK. The picture does not come only in battery mode.
The recommended GK driver from Dell is version date: 27.09.2007, version: 156.61, A03. The one on my device is 7.15.11.7532 from 06/10/2008. How can the driver recommended by Dell be current?



Who can help ???