When i put my sd card into my camera it needs to be formatted

The E327 works with SD cards. Your 8GB card is actually an SDHC card. While it fits into the slot, it's electronically incompatible and will not work in devices not designed to accept SDHC cards. You need to use SD cards, 2GB and smaller.

The M425 works with SD cards, not with SDHC cards. You need to use SD cards, 2GB and smaller.

The E327 can use MMC or SD cards, at least 16MB and no more than 1GB in size. SD cards are recommended as they are faster than MMC cards.

You could try formatting it in My Computer on PC by right clicking on its icon to bring down the option, then format again in the camera to ensure compatibility

SD cards have a slide switch along one edge. The position farthest from the contacts locks the card, protecting it from writes. The position nearest the contacts unlocks the card.

You need to buy an SD card of 1 or 2gb size.

Just fixed this problem on a M525 camera (same physical construction).

Do a search with M525 and format.

Same problem here, i upload the pics on my computer, then i turn off my cam, few minutes later try to turn it on, but no success, still have the blackscreen. I try to change the battery, reset it (15s without the battery, another 2 hours but no success), format the memory card (even without the memory the cam doesn't turn on).

1sr Check the manual- It is possible the the 2 Gb card is too big for the camera.
If it is acceptable to the camera then the card is probably defective and needs to be returned for exchange.

Does SD card work in PC? HP R707 will not work with SD card larger than 2GB.