hi guys i just bought a couple of budget cases to transfer internals of two desktops with broken cases, the problem is the floor of the budget case has raised bumps so when i put in board risers, it then lifts the board to high for all the audio and usb connectors to fit into the push in slot at back of case, does anyone know how to get around this.
It would be better if they were rubber as you do not want any part of the Mobo to touch the case motherboard plate. You should also place a rubber cap on any raised screw hole on the plate, again to ensure that you do not cause a short by the plate touching the Mobo.
Just screw the motherboard direct to the chasis of the case. Both sides of the motherboard are insulated. You just use the risers, if, some of the screw holes on the motherboard do not fit flush with the chasis and even then you do not have to use all the holes in the motherboard. Just make sure it is fairly secure, especially around the edges.
My first ever build, which I eventually took to my local PC repair shop, suffered from shorting because the board managed to touch the back plate somehow. For the few coppers it would cost to add the washers, I would suggest doing so.