Quote:
Hi.... i am facing the same problem. When i power on the main power supply & switch on the CPU the light turns on & CPU fan also turns on but just for one second & the it turns off. After repeatedly doing the same process (turning off the main supply for 1 minute the again turning it on & turning on the CPU) the PC starts booting.
Earlier i had faced the same problem but after changing the SMPS the problem got sorted out. Once again i am facing the same problem....Any suggestions???
Well, you already answered your question. It is a problem of psu & you can check it by going into the BIOS & seeing if the 3.3v is below the level of 1.90 or so.