I recentlly had a problem with my PC where when i turned it on the HDD light would just stay on and nothing would start or come up on screen (no beeps but all fans started). I purchased a new CPU (same model and speeds) to see if that was the problem and it still did it so i got a new motherboard (same model) and again still nothing. I changed the power supply with another i have on a PC i KNOW works and its STILL the same. I even used the power switch out of the other PC as well as trying with no ram and different ram but STILL the same problem. I dont understand how that can be possible when EVER part is different from that of what is in the computer. No HDD or sata or IDE drives were connected, no cards or anything but still the thing wont start.

New/different motherboard
New/different CPU
Different Ram
Different case & power switch
NO other cards or devices

So WHY is there STILL the same problem ????????

The stats of the PC are as follows

AMD Sempron 3000+
Asus K8V-VM Motherboard
1GB DDR400 Ram

Any help would be VERY much appreciated because i am COMPLETELY stumped on what the problem is when ALL the parts are different and i cant afford to be spending any more money on the system.

Thank You

One item not mentioned is graphics card and or monitor condition.

Are you sure the monitor works? Do you get a "No Signal Input" message?

That motherboard has on-board VGA as well as a PCI_E x16 slot. Which are you using?

The graphics card is fine, The way the PC was before i had a 256 Nvidia but i have also tryed with the onboard video and have done the same with the new motherboard, Monitor works fine and is currently being used on a different pc.