popesloth :
I was working on my pc when I put in another hdd which caused the sata cable on my main drive to fall out now it won't boot and or makes a reptitive noise sort of like beeping when I turn on my pc please help
Exactly what is going on with the sound, is the computer booting past the BIOS and trying to start Windows? Did you check to make sure no other wires got messed up?
Were you working on the drives when the computer was turned on? Go through the wiring and make sure the cables are all where they should be, also do a BIOS reset on the motherboard to defaults (jumper switch or unplug the system and take out the CMOS battery for about 15 seconds).