My computer started hanging up after being on for 5-10 minutes but now it will not start at all. All I get is a whirring of fans on the CPU and PSU and a red light on the on/off button. This lasts for 4-5 seconds and turns off.
I tried reseating the RAM and adding heat sink past between the sink and the CPU. I tightened the heat sink as much as possible.
I replaced the PSU, but failed to realise when I brought it that it did not have a connector on it for my nvidea graphics card. Nonetheless, I attached all the other connectors and turned the power on. This time a continuous beep and a red light and the fans whirring.
I then disconnected the graphics card and tried again and this time just get the red light and whirring of fans again.
What would you suggest now? Is it a motherboard issue or is there something else I am missing?