For the most part, the PS4 had a relatively smooth launch compared to consoles of previous generations. Less than a year after its launch, the console has only really suffered from one major bug, and a spooky one at that — it will randomly wake from a powered down state and eject whatever disc is currently inside. It’s unnerving when this bug wakes you up at three in the morning, then quickly becomes obnoxious when the console won’t allow you to pop the disc back in. The issue is more widespread than it seems, but not widespread enough to where you would have heard about it if you haven’t experienced it.
There are a few methods to fix the issue, and all of them are easy enough.
Pull the plug, wait a while
Like any piece of technology, you should try to reset the PS4 before you change anything major. Pull out the power cord, wait a while in the hopes that it somehow will please the technology gods, then plug it back in and fire it up. It sounds silly, but this has been reported to fix the issue frequently enough. If you aren’t up-to-date, update to the most recent firmware afterwards just to be safe.
Tighten the manual eject screw
You should try the above power plug method before messing with your console’s guttyworks, but if it doesn’t work, you don’t have to root around too deep amongst the PS4′s innards. The console has a failsafe for if a disc gets stuck in the slot, but rather than the little paperclip holes old CD-ROM drives used to employ, the PS4 uses a screw kept underneath the hood.
First, unplug everything from the console and place it in a well-lit area.
Pop the PS4′s HDD lid off. Slide more than pull.
You only have to pop off the HDD panel, then tighten a small, somewhat hidden screw. In the above diagram, the orange arrow is pointing toward the manual eject screw’s burrow. The screw is so small that a jeweler’s screwdriver works best, though any tiny Phillips-head will do.
Normally, you’d be twisting the screw in such a way to where a stuck disc will slowly poke out from the slot. However, if this screw is bumped out of place or somehow too loose, the console will interpret that as someone twisting the screw in order to eject a disc, and thus continually perform the eject function. This is why the console turns itself on – most game consoles can turn on using the disc eject feature, in addition to tapping the standard power button.
So, tighten the screw, put the lid back on, plug everything back in, and hope for the best.
If none of the above work
You’re boned, and you’ll have to send your PS4 in to Sony for a repair or replacement. However, the majority of users experiencing the issue report that one of the above two methods does the trick.