Helped a friend with a HP Presario CQ50-115NR laptop that had a hard drive die. Installed new drive and Windows 7 (64-bit in this case) and used the various HP drivers listed on their web site, but under device manager it showed a yellow exclamation for coprocessor," thereby indicating a problem. After a lot of searching, I finally found the correct Nvidia nforce chipset driver to solve the problem. In my case Nvidia's auto detect would not run. If that occurs, then manually select the nForce 7 series driver and whatever operating system you are running. That driver covers, among others, the 780a SLI, 760i SLI, 750a SLI, 740i SLI, 740a SLI, 730i (Geforce 9400/9300), 730a (GeForce 8300/8200), 720i, 720a (GeForce 8100), 710a chipsets, and this group obviously includes the chipset for the CQ50-115NR.
Get behind the wheel with Roadshow
Love cars? Climb into the driver's seat for the latest videos, reviews, shopping advice and picks by our editors delivered to your inbox every week.