My system was always restarting in the middle of the work and when it restarts it shows the error message of computer not responding. I disable the automatic restart in the control panel> System > and settings . Please help me in this
When you say it "restarts" does it log you out of Windows and the PC do a complete reboot?
If so, you could potentially be looking at a dead power supply which is causing it to reboot. If it is just freezing up and requiring you to ctrl+alt+del and end the process then it could be something entirely different.
Here are a couple key questions to ask yourself:
1. Have I added any new hardware / software that could be causing this?
2. Can I possibly restore my computer to an earlier date using Windows System Restore?