Added Additional Hard Drive, Computer Doesn't Start Now

[danyjr]

Dear Overclockers, I seem to have an issue,

I received this new 2TB WD Hard drive just now.
I got two DVD drives both connected via separate SATA cables to the motherboard.
Didn't have an extra SATA cable, so unplugged one of the DVD drives' SATA cables and plugged it to the new Hard drive.
Connected the L-shaped SATA power from PSU to it as well.

...and it my computer doesn't switch on. It's dead. I thought maybe I didn't have enough power for two hard drives so took the new hard drive out and (as far as I can think) I put the set up back to its original. No success. Any idea what I've done wrong? It's getting dark here now so I don't even want to look at the mess inside my case.

Thanks in advance.

PS: Is there any way to turn on the computer without actually pushing the ON/OFF button outside the case? I may have damaged the power button (very very unlikely but that's all I can think of)

Update#1: I had an external USB hard drive connected to my computer, and it seems like current goes inside my motherboard because when I turn the PSU on (from back of the case), the external hard drive initializes. Could the PSU still be faulty?

Question#1: Does the computer switch on if there are no memory units or hard drive connected to the motherboard?

 

[malcolm]

What do you mean by '...and it my computer doesn't start now.'?

Do you mean it won't switch on? Or won't boot?

If it won't switch on, maybe you disturbed the cables from the switch to the motherboard?

 

[danyjr]

What do you mean by '...and it my computer doesn't start now.'?

Do you mean it won't switch on? Or won't boot?

If it won't switch on, maybe you disturbed the cables from the switch to the motherboard?

I mean it doesn't switch on. I very much doubt I have disturbed a cable. I did not touched anything on the motherboard at all. I will re-check again in the morning.

Cheers!

 

[Freddie589]

Best thing to do first is check basics

1) is the 24 and 4 pin cables both connected?

2) when the PSU is turned on by the mains are there any lights on the board?

3) the computer will do one long beep then pause then one more until turned of by power if their is no ram in the machine

4) what's your PSU?

5) if you Want to turn it on without a switch the you could jump the headers using a screwdriver touching the pwr button connecters but it's entirely up too you if you wish to do this if in doubt use pwr switch

Update#1: I had an external USB hard drive connected to my computer, and it seems like current goes inside my motherboard because when I turn the PSU on (from back of the case), the external hard drive initializes. Could the PSU still be faulty?

Yes.

Freddie589