My computer has stopped booting. It sometimes gets to the initial post and beebs once and starts loading windows then freezes. At other times it does not get as far as loading windows but freezes soon after the the single beep and at other times the fans start and the lights come on then it restarts after a few seconds before it beeps. I have checked that all cables are correctly connected. I assume it is a hardware issue but I am a little unsure where to start sorting out this problem. Any advice would be much appreciated. My set up is as follows: MOTHERBOARD: Gigabyte GA-965P-DS3 RAM: 2048MB, 2GB (2x1GB) CorsairTwinX XMS2, DDR2 PC2-6400 (800), 240 Pins, Non-ECC Unbuffered, CAS 4-4-4-12, EPP PROCESSOR Intel Core 2 Duo E6600 (2.4ghz) Socket 775 FSB1066 4MB Cache Retail Boxed Processor with Thermalright HR-01 Heatsink - 775 + Fan Duct HARD DRIVES : 2 x Samsung SpinPoint P 250GB 7200RPM SATA 3GB/s 8MB Cache - OEM GRAPHICS CARD: NVIDIA Fanless 7600GT 256MB DDR3 PCI-E POWER SUPPLY: Nesteq Semi-Fanless ASM PSU, 520W CASE: Lian Li PC-7 SE III Silver Midi Tower (120mm DVD DRIVES – 2 x NEC 7170A 18x DVD+/-RW Dual Layer Biege FLOPPY DRIVE