My zebra z4mplus just start printing at the center of the label instead of at the left side of the label. Instead of a normal full printing on a label, now the left half of the label is blank, and the right half of the label contains what should be printed on the left half.

That confirms that your driver has been really corrupted. Installing the driver again using the disc that came with it is the best thing to do. It will automatically re-install the driver/software and will be able to determine automatically if it will replace the current existing driver which does not function properly. I suspect the driver is totally wiped out already since you cannot see it in the control panel and windows xp automatically switched in using a default printer driver which of course will not function properly. I hope you still have the disc since the Official Zebra Site does not provide any support anymore to ZM4Plus http://www.zebra.com/id/zebra/na/en/inde... listed as discontinued. That confirms that your driver has been really corrupted. Installing the driver again using the disc that came with it is the best thing to do. It will automatically re-install the driver/software and will be able to determine automatically if it will replace the current existing driver which does not function properly. I suspect the driver is totally wiped out already since you cannot see it in the control panel and windows xp automatically switched in using a default printer driver which of course will not function properly. I hope you still have the disc since the Official Zebra Site does not provide any support anymore to ZM4Plus (http://www.zebra.com/id/zebra/na/en/index/products/printers/discontinued.html), listed as discontinued.

I did the driver reinstall with the CD. The same problem is still there. What else do you suggest? I did the driver reinstall with the CD. The same problem is still there. What else do you suggest?