Hopefully some PC gurus will be able to provide some advice on what the hell is going wrong with my PC(using the laptop at the moment) System specs: AMD Athlon 64 3500+ (2200Mhz) ASUS A8V Deluxe MB 1024MB PC3200 DDR RAM NVidea GeForce 6800 video card(128MB RAM) Onboard audio Primary HDD - WD SATA 120GB(system/programs) Secondary HDD - WD IDE 320GB(storage) Marvel Yukon PCI Gigabit ethernet adapter Windows XP Pro - SP1 TrendMicro PC Cillin antivirus Problem: The system will totally freeze with no alerts/warnings at random intervals when doing anything significant. Browsing the web, running a game, running Microsoft Word. Can't tie it down to anything specific that is causing the crash. When it happens, the video output fails completely ie. I get the "NO SIGNAL" alert come up on the monitor. The computer becomes totally unresponsive ie. even the power/reset buttons do nothing - I have to physically cut the power to get it going again. It has been getting worse over the last few months to the point that I only get between 5-10 minutes out of it at a time. The only thing that doesn't crash it is doing nothing. If I start it up and leave it it is fine. If I only bring up Itunes and press play and let it run, it seems happy with that. But start something else up and she goes off. Actions so far: Have done a full format of both drives with a full re-install of Windows as well as updating all Windows updates for SP1. Have up to date antivirus and scanned with no problems. Have downloaded all BIOS/patches/updates for hardware. Have scanned the web for similar problems and found one site that mentioned a similar problem that needed some BIOS changes. Did all those BIOS changes plus about 90 others with no effect. I am totally stumped and don't know whether it is hardware deterioration due to the fact it is getting worse with time despite a full format and re-install. Any ideas would be greatly appreciated as it is unuseable and the next step is new hardware/system and lots of expense.