首先檢查硬件連接和電源設(shè)置，1. 對有線鼠標嘗試更換USB端口並檢查線纜是否損壞，對無線鼠標更換電池並確保接收器接觸良好且遠離干擾源；2. 在電源選項中禁用USB選擇性暫停設(shè)置以防止系統(tǒng)自動關(guān)閉USB設(shè)備；3. 通過設(shè)備管理器更新或重新安裝鼠標驅(qū)動程序；4. 確保Windows系統(tǒng)及鼠標固件為最新版本，可使用廠商專用軟件更新；5. 在新用戶配置文件或安全模式下測試鼠標以排除軟件衝突；6. 換用其他鼠標或在其他電腦上測試當(dāng)前鼠標以判斷故障來源；7. 在控制面板中關(guān)閉快速啟動功能以排除其導(dǎo)致的USB兼容性問題，若以上步驟均無效，則鼠標可能已損壞需更換，問題通常由電源管理或電池問題引起，應(yīng)從簡單步驟開始排查，最終確認設(shè)備是否需要替換。

A mouse that keeps disconnecting in Windows can be frustrating, especially if you're in the middle of work or a game. The issue can stem from hardware, drivers, power settings, or interference. Here's how to systematically troubleshoot and fix it.

1. Check the Physical Connection and Hardware

Start with the basics — many disconnect issues are caused by simple hardware problems.

• For wired mice :

  
  • Try a different USB port. Avoid using USB hubs — plug directly into the computer.
  • Inspect the cable for fraying or damage. Wiggle the cable near the connector to see if the mouse cuts out — if it does, the cable may be faulty.
  • Test the mouse on another computer to see if the problem follows the device.

• For wireless mice :

  • Replace or recharge the batteries. Low power is a common cause of intermittent disconnections.
  • Ensure the USB receiver is fully plugged in and not loose.
  • Move the receiver closer to the mouse (use an extension cable if needed) to reduce interference.
  • Avoid placing the receiver behind metal objects or near Wi-Fi routers, microwaves, or other sources of interference.

2. Disable USB Selective Suspend (Power Saving)

Windows can turn off USB devices to save power, which may cause your mouse to disconnect.

Steps to disable:

1. Open Control Panel > Power Options .
2. Click on Change plan settings for your current power plan.
3. Click Change advanced power settings .
4. Expand USB settings > USB selective suspend setting .
5. Set both On battery and Plugged in to Disabled .
6. Click Apply > OK .

Restart your computer and test the mouse.

3. Update or Reinstall Mouse Drivers

Outdated or corrupted drivers can cause disconnect issues.

To update the driver:

1. Press Win X and select Device Manager .
2. Expand Mice and other pointing devices .
3. Right-click your mouse and choose Update driver .
4. Select Search automatically for updated driver software .

If that doesn't help:

• Right-click the mouse again and choose Uninstall device .
• Unplug the mouse (if wired) or remove the receiver (if wireless).
• Restart your computer — Windows will reinstall the driver automatically when you reconnect the mouse.

4. Check for Windows and Firmware Updates

• Make sure Windows is up to date:
  Go to Settings > Update & Security > Windows Update > Check for updates .

• If you're using a branded mouse (like Logitech, Razer, or Microsoft), check the manufacturer's website for firmware updates or dedicated software (eg, Logitech Options, Razer Synapse).

5. Test in Another User Profile or Safe Mode

To rule out software conflicts:

• Create a new user account and test the mouse there.
• Or, boot into Safe Mode :
  1. Press Win R , type msconfig , and press Enter.
  2. Go to the Boot tab, check Safe boot , and restart.
  3. Test the mouse in Safe Mode.

If the mouse works fine in Safe Mode, a background app or driver may be interfering.

6. Try a Different Mouse or Port

If possible, test another mouse on the same computer. If the problem disappears, your original mouse is likely faulty.
Similarly, test your mouse on another PC. If it disconnects there too, the mouse itself is the issue.

7. Disable Fast Startup

Fast Startup can sometimes cause USB devices to malfunction.

To disable:

1. Go to Control Panel > Power Options > Choose what the power buttons do .
2. Click Change settings that are currently unavailable .
3. Uncheck Turn on fast startup .
4. Save changes.

Most of the time, the issue is resolved by disabling USB power saving or replacing weak batteries. If none of the above works, the mouse may be failing and need replacement.

Basically, start simple — check the hardware and power settings — before diving into drivers and updates.

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