The cops, in apprehending the perp at the storage locker, first break a lock on the outside of the roll-up door, then enter the unit to find the suspect working at his computer desk inside. If he entered the storage space, then rolled down the door, he would've had no way to put a lock on the outside of the door.
(at around 45 mins) It is claimed that the RAM of the computer keeps log of all actions.
This is not exactly true. RAM is not designed to retain data without power, but to be fast to read and write. Most operating systems start using RAM from the low numbered addresses at every boot-up, and work their way up from there. This erases and overwrites all data stored in those addresses before. Although it is known that RAM can occasionally retain pieces of data for several hours without power, it is sporadic and there is no sure way to know which areas contain healthy data and which have partially or completely evaporated. Even that data can not be safely linked to a specific session or exact hour of writing.