Windows could not start: file software39/driver pci is corrupt or missing. It says I should use the boot disk but I don’t have one. What can I do?
This error message most likely means that there is a device driver missing or corrupted. Devices are all the hardware components that your computer uses - some are external and removable, like printers and monitors; others are internal, like sound cards. Device drivers are small software programs that your computer needs in order to properly communicate with and use your devices. According to your error message, there is an issue with one of your drivers.
Since Windows is not starting normally, try booting in Safe Mode. Reboot your PC and press the F8 key. Pick Safe Mode when given a choice and then follow the instructions below.
Run Full System Virus Scans
Before we get to troubleshooting the device driver, I should point out that there are several user reports indicating that this error message might be caused by a virus. At this point, if you can access your computer, you should update your antivirus and malware programs and run full system virus scans as soon as possible.
Using Device Manager to Locate Problem Devices
To troubleshoot the driver, first open Device Manager so that you can locate the problem device. Right click on My Computer, then choose Manage, and then click Device Manager. Look for any yellow ! signs beside listings to find the device problem.
Reinstall the Device Driver
Once you find the problem, you can reinstall the driver to resolve any corruption issues.
- On the right side of the window, click the + beside the categories to expand them and find the device that isn’t working properly.
- Right click the device and then click Uninstall.
- In the confirmation box, click OK
- Click Yes to restart your computer or reboot manually
- When your computer restarts it should automatically detect the device and reload the driver
Update the Driver
If this doesn’t do the trick, you might need to update your driver. You can see the name and manufacturer or the device that is giving you problems in Device Manager, then visit the manufacturer’s website and look for downloads and drivers. Find the appropriate one for your device and operating system and follow the instructions for installation.
Registry Edits and Further Assistance
If you are still having problems, you might need to edit a corrupt registry key but - in order to give you directions - I first need to know which device we are dealing with. If you need further help, please write again with as much information as possible about the device that you are troubleshooting as well as your operating system details and we can take it from there. Good luck!
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