1. Check the Obvious:
* Fuses: Start by checking your car's fuse box (usually under the hood or dashboard) for blown fuses related to the power windows. The owner's manual will show you the fuse diagram. Replace any blown fuses.
* Battery: A weak battery can cause intermittent or complete power window failure. Test your battery voltage.
* Power Window Switch: Try using the passenger-side window switch to operate the driver's side window. If it works, the problem is likely the driver's side switch itself, not the motor or wiring. If it doesn't work from the passenger side either, the problem is more likely in the wiring or master control module.
2. If the above checks don't solve the problem:
The simultaneous failure of all windows strongly suggests a problem in the main power window control system, likely:
* Master Window Switch: As mentioned, the driver's side switch often controls all windows. A faulty switch can interrupt power to all of them. This is the most likely cause if you replaced the driver's side motor and the issue persists.
* Wiring Harness: A damaged or loose wire in the main power window harness (the bundle of wires that connects all the switches and motors) could cut power to all windows. This might have been accidentally damaged during the motor replacement. Carefully examine the wiring harness in the door and where it connects to the body. Look for broken or disconnected wires.
* Power Window Control Module/Relay: Some cars have a dedicated control module or relay that manages the power windows. A faulty module would affect all windows. This is typically a more advanced repair requiring diagnostic tools.
3. Addressing the Driver's Side Motor Replacement (assuming it's already done):
* Correct Installation: Double-check that you installed the new motor correctly. Was the motor connected properly? Are there any loose connections?
* Window Regulator: The window regulator (the mechanism that moves the window up and down) could be damaged, preventing the motor from working effectively. You might have damaged the regulator during the motor replacement.
4. Next Steps:
* Consult Your Owner's Manual: This will have diagrams of the fuse box and power window system.
* Online Repair Manuals: Search for repair manuals specific to your car's make, model, and year. These often have detailed instructions and diagrams. Sites like Haynes and Chilton offer such manuals.
* Professional Mechanic: If you're uncomfortable working on your car's electrical system, take it to a qualified mechanic. Diagnosing and repairing electrical problems can be difficult, and incorrectly troubleshooting could cause further damage.
In short: The simultaneous failure of all windows strongly suggests a problem *beyond* the driver's side window motor. Carefully check fuses, the battery, and the master window switch before considering more complex issues like the wiring harness or control module. If you're not comfortable with car repair, a professional is your best bet to avoid further complications.
