I have a Dell inspiron 530 with 2gb of ram, 2.53ghz intel core duo. I have two USB printers connected. An HP C3180 inkjet and a Samsung ML-2510 laser. I have had the Samsung for about 3 years and the HP for 2. Up until last week everything has been working just fine. Last week I printed a file and as soon as the printer started the computer rebooted. In the last two days this has been happening more frequently. Now it is almost 100% of the print jobs start a reboot.
Here's what I have checked so far.
I have tried other USB ports, updated the print drivers, updated the system, and done a complete scan for viruses using webroot antivirus with spysweeper. Just for laughs I tried shutting down the printer. As soon as I turned the power back on the computer rebooted. I have tried installing a powered USB hub so that the printer would not draw power from the computer. I printed a dozen documents from several programs and the web just fine, then it rebooted again. (the powered USB hub is an old one. It is not USB 2.0.) The device manager says the printer is working fine. I did a system reset to the earliest date available, which was two weeks ago, no help.
Oh, and no new software. Just the regular updates such as HP printer updates, adobe, Microsoft system, virus definitions and software updates.
I can print to the HP inkjet printer with no problem.