Hey Drakesar,
Could you check the following:
- did you happen to create a new profile ? if so, this will not have your previous savegames
- if you did not create a new one, please check in windows explorer if your profile and savegames are still present on your disk: an example : ..\Documents\Larian Studios\Divinity Original Sin\PlayerProfiles\zxcvzxcvzxcv\Savegames
- did you perhaps use the divinity modding tool and load up a mod ?