CPU: AMD 4000+ Motherboard:Asus A8N SLI RAM: 2x512 Corsair Value-Select GPU: Asus/Nvidia 7800GT PSU: "the Best Power" MT-500P OS: Windows Home XP I receive a BSOD at random times, but only at my house. research seems to point to it being something with the Nvidia Firewall, as I get NVTcp.sys that comes up on the BSOD. My system used to work fine, I brought it to a friend's house to try and work on it, and it never crashed there, the only difference in setup was him have a UPS backup, I went out and bought one to see if it would fix the problem, no luck, I have updated the BIOS and th Chipset as well as un-installing the Nvidia Firewall. I have tried plugging it into different parts of the house with no luck. I have also tried updating the video card drivers as well as rolling back to old ones. When I updated the BIOS, I did not receive any errors for a bout a day and a half. then the problem came back, the same thing when I hooked up the UPS backup. Please help, this is really starting to get old. Also if having mini-dumps would help, I'd be happy to attach them, if I knew how, I am posting from my laptop right now, my desktop wont stay up for more than 5-10 minutes.