My friend has 2 computers, one is running Windows XP Home version the other is running Vista. They are on a network via a router. The connection is highspeed cable. The XP machine is a Pentium 4 300 something mhz with 2 gb ram and an ATI 500 mb card. The other is a dual core, with 2 gb ram and onboard video. That's the best info I can give because the machines are not available for me to look at right now. Here's the problem, both machines are randomly rebooting. The XP machine has been a chronic problem for her. She has had to send it back to the manufacturer twice and had the power supply, motherboard and processor replaced both times. The current board is a phoenix. The dual core has worked fine up until now. Because both machines are totally different with 2 different OS's, I suspect either virus or malware. Her boyfriend is a bit of a bonehead that I have repeatedly warned to stay off certain sites but he keeps going on them repeatedly and using both computers to do it. He chronically comes to me for help then contradicts me when I tell him what's up, even though the fool doesn't even know what ctrl-alt-del is for. I suspect a virus or malware has invaded their network. Somehow she has the idea that Java may be the problem, but I'm running the same version on my PC at my home with no problem. There's more history involved with this problem but I'm trying to keep this thread from getting too wordy. If necessary I'll give the rest in a response to this thread.