If you’ve ever encountered the Windows Error Code ERROR_45: "Device is not connected", you know how frustrating it can be. This error usually pops up when your operating system detects a device was once connected but is no longer available or properly recognized. Whether it’s a USB peripheral, external hard drive, printer, or internal hardware component, this issue can disrupt your workflow and cause concern.
Don’t worry — in this guide, we’ll walk you through clear, easy-to-follow steps to diagnose and fix this problem, even if you’re not a tech expert. Let’s get your device up and running again!
What is Windows Error Code ERROR_45?
Windows Error Code ERROR_45 means that the device you are trying to use is currently not connected to your computer or has become inaccessible. This might happen due to unplugged hardware, driver issues, corrupt system files, or sometimes even hardware failure.
Common symptoms include:
- The device not showing up in File Explorer or Device Manager
- Error message: "Currently, this hardware device is not connected to the computer. (Code 45)"
- The device not functioning as expected
Step 1: Check Physical Connections
Before diving into software fixes, always start with the basics.
- Unplug and Replug the Device: If it’s an external device like a USB drive, printer, or external HDD, disconnect it.
- Try a Different Port: Sometimes USB ports can fail. Switch to another port on your PC.
- Inspect Connectors for Damage: Look for bent pins, dirt, or loose connections.
- Reconnect firmly and wait a few moments to see if Windows detects the device.
Pro Tip: If you’re using a USB hub, try connecting the device directly to the PC.
Step 2: Restart Your Computer
Restarting your system can refresh the hardware detection process.
- Save your work.
- Click on the Start menu > Power and choose Restart.
- After reboot, check if the device is back online.
Step 3: Use Device Manager to Identify the Issue
Device Manager is your go-to tool for managing and troubleshooting hardware.
- Press Windows + X keys and select Device Manager.
- Look for any device with a yellow triangle or exclamation mark.
- Right-click on the problematic device and select Properties.
- Under the General tab, you may see the error message including Code 45.
- Click Scan for hardware changes in the Device Manager menu to prompt Windows to detect devices again.
Step 4: Reinstall the Device Driver
Corrupted or outdated drivers often cause communication errors.
- In Device Manager, right-click the affected device.
- Choose Uninstall device. Confirm when prompted.
- Disconnect the device (if external), wait 30 seconds, then reconnect it.
- Windows should attempt to reinstall the driver automatically.
- If it doesn’t, visit the manufacturer’s website to download and install the latest drivers manually.
Step 5: Run Windows Troubleshooter
Windows provides built-in troubleshooters to fix many hardware problems.
- Open Settings (Windows + I).
- Navigate to Update & Security > Troubleshoot > Additional troubleshooters.
- Select the relevant troubleshooter — for example, Hardware and Devices.
- Run the troubleshooter and follow prompts to detect and fix errors.
Step 6: Check for Windows Updates
Sometimes, a Windows update contains fixes for hardware compatibility.
- Open Settings.
- Go to Update & Security > Windows Update.
- Click Check for updates.
- Install any pending updates and restart your PC.
Step 7: Use System Restore (If Problem Started Recently)
If the device worked before and suddenly stopped, a recent system change might be the culprit.
- Search for Create a restore point in the Start menu.
- Click System Restore in the System Properties window.
- Follow the wizard to choose a restore point dated before the error occurred.
- Restore your system and check the device again.
Step 8: Check Hardware Status (Advanced – For Internal Devices)
If the above steps don’t work, the hardware itself might have an issue.
- Open your PC case (if possible) and check internal devices for loose cables.
- Run diagnostics tools provided by your PC manufacturer.
- If you are unsure or uncomfortable opening your computer, seek assistance from a qualified technician.
Final Thoughts
Facing Windows Error Code ERROR_45 can be unsettling, but most of the time, it’s a simple connectivity or driver issue. Following these detailed steps usually gets your device up and running quickly.
Remember to keep your system and drivers up to date, and handle hardware carefully to avoid disconnect issues.
If you’ve tried everything and the error persists, it might be time to consult a professional or consider device replacement.
Did these steps help fix your ERROR_45 problem?
Feel free to share your experience or ask questions below! Your feedback helps us make guides better for everyone.
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By combining patience and these practical steps, you’ll minimize downtime and frustration. Happy computing! 🚀
