Check your service tag whether you have purchase your system with Software Support or not. If yes, call to the Software Support. They will help you.

 

Don't waste your time troubleshoot with the Dell Technical Support (hardware). If your system have not cover under Software Support, you can pay sum amount and sign up for this GREAT support. They can help you to find out if it is hardware problem or not too. Which in many occassions the hardware TS fail to verify. So don't be surprise if the software support specialist can verify that your problem is hardware problem.

My problem with freezing was resolved by updating the driver for my video card.  But at that time Dell didn't have the latest one on their support site and theirs didn't help, and I had to go to the ATI site to get the latest version.  Since then I've noticed that updates for that driver have been coming through Window Update from Microsoft, and with those I've had no problem.  This is all just my experiences.  Others may have had different experiences with their hardware.