Windows 7 Computer turns itself off after about 15-20 minutes of usage

The issue you're facing with your computer turning off after 15-20 minutes of use could be due to various reasons. Here are some troubleshooting steps you can follow to diagnose and resolve the problem: 1. Check for Overheating: - Ensure that the cooling system (fans, heatsinks) is working properly and free of dust. Overheating can cause a computer to shut down automatically to prevent damage. 2. Check for Faulty Power Supply: - A failing or inadequate power supply can cause the system to shut down unexpectedly. Consider replacing the power supply if it's old or showing signs of failure. 3. Test the Memory (RAM): - Run a memory diagnostic tool to check if the RAM is functioning correctly. Faulty RAM modules can cause system instability and shutdowns. 4. Scan for Malware: - Perform a thorough antivirus scan to check for any malware or viruses that could be causing the shutdown issue. 5. Update Drivers and Operating System: - Ensure that all your drivers (especially graphics and chipset drivers) are up to date. Also, make sure your operating system is fully updated with the latest patches. 6. Monitoring System Temperatures: - Use monitoring software like HWMonitor to check the temperature of your CPU and GPU. High temperatures could be an indication of overheating. 7. Test in Safe Mode: - Boot into Safe Mode and check if the problem persists. Safe Mode loads Windows with only necessary drivers, which can help determine if the issue is related to a specific program or driver. 8. Check Event Viewer: - Look for any critical errors or warnings in the Windows Event Viewer that might provide more information about why the system is shutting down. By following these steps, you should be able to identify the root cause of the shutdown issue and take appropriate action to resolve it.