But I had the same problem, associated with a Lexmark printer. Lexmark were very helpful: visit support@lexmark.com, and tell them the problem; you will probably receive advice on how to solve it, by downloading a new printer driver.

If so I think it's this click here ( http://www.lexmark.com/lexmark/sequentiale...17_0_en,00.html ) which you can stop using the instructions in my link or go into msconfig and take it out of the start up list..

Apparently, LXBUTime or whatever it is. See if you can remove it from the startup group. Get CCleaner ("crap cleaner") which allows you to edit the startup list.

I would unplug and uninstall the drivers for both printers. Go to
Start > Settings > Printers and Faxes and remove both of the printers there
too. Rather than using a CD, go to the Lexmark site and download the latest
drivers for each of the printers. Install one printer as if it was "day one"
out of the box. Wait a day or so to see if you have any problems. Then
install the second printer.

Clear all temp files, Internet cache files, Recycle Bin, etc., then I would
get a different virus scanner (such as Avast which is free) and run it on
your machine. Download "Vcleaner.exe" from this page. Boot to safe mode.
Open a command window ("cmd" in run box) and run the program.

If you are still getting file corruption, or other problems are cropping up
as well, I would then suspect the hard drive or disk controller on the
motherboard may be failing..