You are not alone with this issue and how to troubleshoot has many discussions we can get ideas from.
Let's try the suggestions at:
My computer, model a6560t, continues to wake from sleep or standby mode. It continues in this cycle nonstop. It is 2 years old and I did a recovery recently, not a restore. I deactivated the PS2 mouse or at least unclicked the "allow this device to wake computer". I had this same problem when I bought the unit and talked to India and they had me do deactivation as well. When that didn't work they had me do something else. Unfortunately, I cannot remember what that something else was. My updates are all up to date etc. Any suggestions would be greatly appreciated