assuming you cant buy another case for replacement, cutting the hdd cage is the general choice. as long as you can secure the hdd elsewhere(imo the thing you should do is cut the cage, and weld it near the bottom sidewards so you can slip in the hdd better.)
as long as the hard drive cage doesnt vibrate. the only thing you need the HDD to do is not move alot when its being in use essentially. so taping it directly to the case isnt the best of ideas, because the case would be susceptible to fan and table/floor vibrations more than in another structure. you can probably get away with duct taping the cage to the case if its secure enough, though remember that case heat will deteriorate and make the tape sticky to the case.
Just weld the graphics card onto the motherboard the last part of the gpu is just for looks so chop it off that's what I did
Dont listen to him. I have seen him post many horrible replies today because he thinks it is funny. He needs to be kicked out. He is not helping at all.
Can you post a picture somehow of the inside of your case? photobucket or alike site. Just upload and paste the link here. That would be awesome.
Can you just cut out a portion of the HDD cage so it is still mounted yet your card fits and HDD can go in a different slot? Or maybe drill some holes in the cage and in the case and bolt it together or rivet it together.
On the bottom of the HDD is probably a circuit board. Make sure not to short any of that out when placed on the floor of the case
Well... I ended up cutting out the offending side of the drive bay and screwed half of the hdd in and the other half duct taped to the floor, there's space between the floor and hdd ofc so I used some of the foam thing (not quite strofoam I think....) from my graphics card package to pad it, it also acts as an insulator.
As to whether if it worked or not.... well.... Let's just say I'm posting this on my new comp