Two day ago my PC stopped working. Now when I try to turn on the PC it turns on for around 10 seconds (screen is blank) and then shut off and keep on repeating this cycle. I have tested the PC in it's basic setup (motherboard, CPU and PSU) and with a different PSU unfortunately same issue is occurring. Also, the motherboard speaker is not making any sound at all. Has anyone encountered anything like this?
Additional detail: The PC was working fine since April 28th until June 12th. The system was also not overclocked. I have tried to reset my CMOS using the Battery method and the button at the back of my motherboard.
Motherboard: MSI Z77A-G45 ATX LGA 1155 DDR3 3PCI-E16 4PCI-E1 SATA3 DVI HDMI VGA DX11 USB3.0
CPU: Intel i5 2500K 3.3GHz Sandy Bridge 6MB
Ram: 2x4GB DDR3-1866 CL9-10-9-27
Video Card: Palit Radeon HD 4870 Sonic 512MB PCIe w/Dual Link
Hard Drive: Western Digital Caviar Black WD1001FALS 1TB 7200 RPM 32MB Cache SATA 3.0Gb/s 3.5" Internal Hard Drive -Bare Drive
OS: Win 7 x64 Ultimate
PSU: OCZ GAMEXSTREAM 600W (+3.3V/36A, +5V/30A, +12V1/18A, +12V2/18A, +12V3/18A, +12V4/18A, -12V/0.5A, +5Vsb/3.0A)