Laptop "System Interrupts" High CPU Usage
4.5
The laptop is slow and Task Manager shows "System Interrupts" using 20-50% of the CPU.
Symptoms
- Slow PC
- High CPU
- Laggy mouse
Possible Causes
- Failing hardware
- Bad driver
- USB device conflict
Step-by-Step Fix
1
Unplug All USB Devices
See if the CPU usage drops. If so, one of your peripherals is faulty.
2
Update All Drivers
Use the manufacturer's update tool (e.g., Dell Command Update) to refresh all system drivers.
3
Check Disk Health
A failing SSD can cause constant interrupts as the system tries to read data.
When to See a Technician
"System Interrupts" isn't a process; it's the CPU waiting for hardware that isn't responding correctly.
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