Factual error: In the scene where Michael is patching the ATX motherboard with a paper clip, the sparks coming out of the box are ridiculously long for being low voltage flashovers, especially as the motherboard has no power supply connected to it. Even if the board would run directly on mains voltage the flashovers would only be a couple of millimeters. Furthermore, flashovers are blue, not yellow as shown.
Factual error: In the scene where Mike is in the subway trying to short the controls with a paperclip; the circuit board appears to be an ATX computer motherboard. The cards he pulls out appear to be PCI cards. Also, the motherboard is missing RAM and has no power supply attached to it. Furthermore, why would sensitive electrical circuit boards be mounted in a locked metal box in a damp subway?
Factual error: When Ben finally uses the machine, we see a lot of flashes of events, some from the recent past (the items he sent himself), and some from the future (war). However, one shot of a future nuclear blast is actually a famous picture of a specific explosion from the '60s, I think (an above ground test on an island somewhere), just with a city superimposed at the front of the photo instead of some watery flat land. I've got a poster of that very explosion on my wall. Hardly a future event.