Question : Problem: ATI Mobility Radeon X1400 device failure on reboot

I have a LG P1 Express Dual Notebook running WIN XP Professional Service Pack 2.   The video card is an ATI Mobility Radeon X1400.  Some time ago (and I do not know the circumstances surrounding what happened), the video card stopped functioning correctly.   If I go into device manager, the device is listed as not working properly.  If however, I disable the device and then enable it, it works fine.  However, on a reboot it goes back to device not working properly and a standard VGA driver is loaded.  I have tried the latest ATI drivers as well as legacy drivers.  I have run drive cleaner to get rid of all the ATI drivers and started afresh but still no luck.   I have run Regcure with no luck.

I think perhaps there is a registry setting that is causing the driver load to fail on a reboot but if I am correct in this, I dont know where to look.  I am basing this on the fact that manually disabling then enabling the device fixes the problem.

Answer : Problem: ATI Mobility Radeon X1400 device failure on reboot

With laptops you MUST install the manufacturer's version of the Mobility drivers NOT the ones from the ATi site.
Because the card is integrated onto the laptop systemboard the drivers need to take account of the other chipsets directly connected to it.

Scrub the drivers you have installed and then try either the driver disk that came with the machine or LG's site.