pretty sure I bricked my m8...

so I had a custom rom on my m8. It always made my phone boot really slowly and since I haven't had service on it for a year and pretty much just used it as an MP3 player/tablet I thought I'd just reinstall the stock rom. I just went into the phones normal back up/restore options didn't flash anything. Anyway, it wiped all my apps and everything, but pretty much just put the custom rom I had back on there, but I realized it didn't install the google play store. I then went into recovery to restore the rom I had, but like an idiot I accidentally selected wipe/factory reset instead of clean for a new rom (clockwork). Anyway, that wiped literally everything. I have no OS and any time I try to go into any file via recovery it says no files were found...long story short everything was wiped. I can still get into recovery, but my major problem is that if I connect my phone to my computer via usb it makes the ping noise, but doesn't actually mount anything so I can't browse the files on the phone. I can get the phone into fastboot where it says it highlighted in red, but again it doesn't actually connect. The only way to get it to even 'sort of' mount is if I turn the phone on and let it try to boot without the OS in which case it just tells me I have an external device connected, but I can't open it. It does seem to briefly connect when I just shut the phone off and connect it, but only during the time when the 'this build is for development purposes only' briefly shows then it just switches over to the battery charging animation. I think my only hope/the easiest would be to buy a memory chip and load a rom onto it and recover from there, but I honestly don't care enough about it to put money into it. Anyway, any suggestions or am I pretty much SOL?