even though it lights, its not so bright. its little dim but cpu is not at all turning on, its silent...
Do you mean the CPU fan? Is the PC booting? Sounds like the PSU. Try swapping the PSU or buying new one(they are not dear)
CPUs don't 'light'. nothing ain't - nothing is not - everything is (that's what you really are saying). The power light may 'light', but if there is no CPU function, no power is going through the CPU. Probably a bad PSU (Power Supply Unit). Change it (cheap).
