Trash won't empty from External Hard Drive

Hello,

I had a folder on my external hard drive that i wanted to delete. it had about 10,000+ items in it, about 40 GB. I moved it to the trash, emptied the trash, and then my computer crashed and told me i had to hold down the power button.

When i logged in to my computer again i tried to empty the trash, but there was nothing in there, the folder i tried to delete was not visible, and i can't press the empty trash button because there is nothing to delete. the folder is no longer visible on my eternal hard drive, and it is not visible in the trash. Where the heck is it?

So i kept my ext hard drive plugged in, created a text edit document on my desktop, moved it to the trash, and it was visible in the trash so now i can press empty trash. The empty trash status bar appeared and said 0 items remaining but just stayed at half way, the trash wouldn't empty. I saw Locum in activity monitor was using about 99 percent cpu, so i left my macbook pro like this for a couple of days, but the trash would still not empty.

Also, if i move anyhting else from the ext drive into trash, it just dissapears and is not visible. My ext hard drive has only a few gigs of space left and i need to free up some space from it but i can't.

Can someone please help me?

Thanks

Ps. I'm not a very technical person