Geforce mx4000 lockup

the drivers might not be installed correctly you might have to uninstall the graphics card restart your computer then reinstall thye graphics card and its drivers

If your computer came with a motherboard disc the drivers could be on it

Click start control panel administrive tools computer management device manager scroll to display adapters + to expand you might see a yellow question mark ? or exclamation mark ! or a red x right click select reinstall drivers or you might need to download one

cnetdownload.com on the home page you should see the download software finder under that there will be a list platform, category sub category price from the category drop down list select drivers then from the price drop down list select free or which ever applies to your need or major geeks download this graphics driver this will depend on your operating system

http://download.cnet.com/%7Bvalue=http://www.download.com/nvidia-geforce4-mx-4000/3000-2108_4-80743.html GeForce MX 4000 graphics processing units (GPUs), provides a new level of cost-effective, high-performance graphics to the value PC user. GeForce MX 4000 GPUs deliver feature-rich graphics technology, performance, and flexibility.

or you could try
http://ati-catalyst-drivers.en.softonic.com/ Optimise your ATi graphics card's performance. ... and save profiles for Direct3D and OpenGL applications ... CATALYST 3.8 adds new features and advanced, customizable options to ATI's industry-leading unified software suite. Gameplay, multimedia, 3D applications
Hope this helps