I believe i found what caused the problem, a usb drive i had with the u3 system on it. It never loaded, but i did use that the same time i used a microsd card.
I put in a new, fat32 formatted sd and usb and unmounted both. Neither worked. i have an 8 gb microsd card, i might just move everything to it in the settings > storage menu, and be stuck with that card forever.
ill try vicincs method first though. Thanks all for help and well wishes, ill let you know what happens