Thanks, I may try older drivers then for my Dell laptop then. They are from the Intel site, not Windows Update.

I have another desktop with a Quadro FX1400 that I use for graphics but I keep trial installations to a minimum on that machine. A couple of years ago I disconnected it from the internet and uninstalled security softwares so I could use the hardware to the max. It runs very smooth and I have barely needed to update drivers since.