Install HBC without SD is possible ?

Dear All,
i have a WII 4.2 PAL with modchip d2sun and i would like install HBC (or, better, usb loader) but my SD doesn't work for hardware problem.
Can i hope to solve this problem ?
I've heard about wiiload but i dont'know where install it: It seems to be connect in a good way between pc and wii but doesn't happens anything.
I've heard also about a ISO file (with modchip i think it's possible to run it) but i can't find it and i'm not sure that it's work with 4.2
Thanks a lot for your patience
G

1. Backups are not supported here so we will not help you with those.
2. There is a very informative page about wiiload here
3. Not sure about the ISO you are talking about..

It isn't possible without SD.