If the heat sink fan is not spinning or is making grinding noises, immediate cleaning is required to prevent permanent damage to the motherboard. Running a full system scan with a reputable offline scanner is necessary to rule out this threat.
Clean Dust to Prevent Shutdowns in Windows 7
Look for an entry with a red icon and the keyword "Critical" or "Error" near the shutdown timestamp. Upgrading to a higher wattage unit can also resolve issues caused by modern components drawing more power than the old supply can handle.
While it may seem like a catastrophic hardware failure, the root cause is frequently software related or stems from a specific system configuration. Software and Driver Conflicts Beyond hardware, software instability is a frequent cause of abrupt shutdowns.
Clean Dust to Prevent Shutdowns in Windows 7
Virus and Malware Elimination Although less common than in the past, malicious software can interfere with system processes to the point of causing a hard shutdown. Testing a PSU requires a multimeter or a paperclip test to verify the output voltages are stable.
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