iPhone 3G boot logo loop

[andies916]

well, like the title says. I've got a 3g that keeps looping on the boot logo. Phone is on boot logo, does a flash then goes back to the boot logo again. Phone did work but homebutton didn't, so I fixed the home button.. Phone died while I was waiting for the part to come in. Once it got fixed, charged phone and that's when the boot logo problem started. I've tried everything, literally. I've tried 4.1 restore and kick out of recovery with tinyumbrella and also iREC method. Restore fresh with 4.2.1. I've put it in DFU for restore.. Held home button and plugged cable in til it goes into restore. Did the jailbreak and boot out of tether.. Installed custom firmware.. Both my macbook and windows desktop can't seem to get it out of the boot logo. So is there anything else I can try? Any suggestions or other methods I haven't tried would be appreciated.. And no I don't have the shsh files for it..