Display driver nvlddmkm not repsonding but has recovered

Purchased an HP dv9225us two days ago and have been experiencing this probelm. Screen goes black, then 10 seconds later, system restores.

System spec: Ultimate X64, Turion TL-60X2, 2 GB RAM, NVIDIA 7600.

Checked various Googles, can't find a fix. Thanks in advance.

I contacted HP as I have a dv9225us laptop; they indicated that it was a corrupted driver. Uninstalled NVIDIA drivers via Control Panel and resisntalled drivers from HP's website. Seems to work.