At the end of March I got a new PC - an Evesham Axis Blaze A-List with the following spec : Processor : AMD Athlon 64 X2 4400+ Motherboard : ATI Radeon XPRESS 200 Crossfire. (MSI RD480 Neo2) RAM : 1 GB (2 x 512 MB) dual channel DDR RAM (PC3200) 400 MHz HDD : 320 GB SATA 7200 rpm with 8MB Buffer (Western Digital) Graphics card : Radeon X1900XT Soundcard : Creative SoundBlaster X-Fi Xtreme Music Two optical drives - DVD-RW and DVD-ROM / CD-RW Power supply : Seasonic SS600HT Active PFC F3 OS : Windows XP Pro Since then, the motherboard has needed replacement no less than four times. The problem manifests like this : The PC will seem fine for a few days (anything from 2 days to a week), then I will start to get problems - BSODs during windows loading - always Stop 0x0000007E with no specified driver or application, and / or the sound abruptly cuts out and can only be recovered by restarting. The crashes and sound failures happen anything from constantly to occasionally for a couple of days and then the motherboard fails - turn the power on and the fans and drive lights come on, but the PC doesn't even begin to boot - no POST, nothing on the monitor at all. A couple of times I have actullay been listening to something when the sound cuts out and there was a lound (and painful - I was using headphones) blip. So far, the motherboard has been replaced 3 times and the power supply once. The second time it happened, I formatted the hard disk and did a complete clean reinstall of windows. I have updated drivers and run anti-virus software. My guess would be that something is charging over time, but other than that I have no clue and it's *incredibly* frustrating. So far, Evesham seems happy to keep replacing motherboards - the last time they took the PC away, but just replaced the motherboard and said it tested OK, but only kept it for a day or two - notlong enough for the problem to manifest. Does anyone have any idea what could be wrong?