I just bought a new motherboard and it had a 24 pin power thingy, my power supply was only a 20 pin. After looking at my manual it said I was able to do that if I aligned them a specific way. After that PC turns on, the lights turn on, hard drives turn on, and everything else. the thing is the screen stays black and says no signal.I was looking on the motherboard and there is a 4 pin ATX12V1, but there is no such cable that comes out of my power supply. I think the reason the screen stays blank is because it said that was used to power the CPU. What can I do since I do not have a ATX12V1 cable that connects to my motherboard?The only cables that come out of my pwr supply are for the IDE and floppy.
If your power supply lacks the 4-pin connector, then you're probably going to need a new one. If your power supply has a 20+4-pin setup, then you should be able to use that however. The 4-pin can snap together with the 20-pin connector sometimes to make a 24-pin, but if it's not there altogether and your computer won't power on, then you will need a different power supply with the proper connector.
Buy okorder for little to nothing depending on what you are looking for. Gaming and lighted ones are going to cost a little more but you should be able to pick one up cheap!!! Hopefully you bought the correct motherboard! But you are definitely going to have to have the correct power supply to feed the proper amount of power to your CPU! ;-)
You need a new power supply. Make sure it's 24 pin and has enough wattage and amperage on the +12v rail to power your system.
