computer not working after installing new hardware

[asecnation]

i just installed a new cpu, motherboard, and 8gb ram and the computer wouldn't boot up. So i hooked up the original parts and tried to install the drivers for the new motheboard.I turned off the computer and put the new parts in. Nothing worked so I plugged the original parts in and i got a black screen with a blinking white line in the top left corner. I also ran a diagnostic and it gave me an error code on the hdd that said BIOHD 3. Any ideas of how to fix this? Please respond quickly!

 

[ignatzatsonic]

Are you sure your hard drive is properly connected to the correct port with a known good cable?

It isn't likely your HD would fail just because you bought a new CPU, motherboard, and RAM.

 

[asecnation]

you may be right but that doesnt explain why the hd doesnt work with the new or original parts. I also just tried to reconect the parts but i was greeted with a black screen that said "loading operating system". nothing happens after that. I also couldn't access the new mother boards POST screen but the BIOS setup, bootmenu, and xpress recovery work.