Help!!!!!!

Bought new computer and thought I would just take Hard Drive out old computer and stick it in new one as a slave to copy files. Was working fine yesterday. Had to move it back to old computer for a couple of things and the bloody thing will not work. It will not power up. I had two HD's in the old computer and have done the same thing to copy files and that is still fine.

Anyone got any ideas? I have tried the HD in three computers and it will not run in any.

Are you running it as a slave in all cases?

When you say it will not run do you mean Windows does not detect it?

Does the BIOS detect it?

Any chance a pin might have been damaged during unplugging/plugging?

tHE COMPUTERS CANNOT SEE THE DRIVE AT ALL. hAVE SET IT AS SLAVE AND ALSO MASTER TO NO AVAIL.

I KNOW LITTLE ABOUT COMPUTERS BUT WOULD THINK IT WAS AN ELECTRICAL PROBLEM ON THE DISCS MOTHERBOARD.

I WAS CONSIDERING BUYING A SECOND IDENTICAL HD AND SWAPPING THE MOTHERBOARDS. DO YOU THINK THIS WOULD HELP? I DO NOT WANT TO SEND IT TO SOME COMPANY THAT IS GOING TO ROB ME BLIND TO GET THE DISC WORKING AGAIN.

Mechanically trying to fix a "broken" hard drive is not feasible. You could buy several new drives for what it would cost even if possible.

If your data is that important then a "Recovery shop" would remove the disks from the drive in order to do this. Only a professional shop would have the tools for this.

That being said I would still try to troubleshoot as much as possible. It is very odd that it was working one moment and not the next.

Did you check all the pins for any damage?