Why Does My Computer Keep Waking From Sleep Mode?

Check Your Peripheral Devices

Often, a mouse or keyboard that is too sensitive can trigger your PC to wake up from the slightest vibration. You can go into Device Manager, select your mouse, and under the Power Management tab, uncheck 'Allow this device to wake the computer.'

Identify Wake Sources

Windows keeps a log of what woke your computer last. Open the Command Prompt as an administrator and type 'powercfg -lastwake.' This will tell you exactly what event or device interrupted your sleep mode, allowing you to isolate and disable the culprit effectively.