Direct Answer: A PS5 that restarts randomly during games is most often a power delivery or overheating fault rather than a software problem — commonly degraded liquid metal thermal compound or a failing power-stage component on the board. Saved Game diagnoses which one it is before any work starts, so you’re not paying to guess.Key Takeaways

• Restarts across several different games or apps point to hardware; a fault tied to one specific game is more likely software
• Overheating from degraded liquid metal and power supply faults are the two most common board-level causes on PS5
• Board-level repair — not a full unit swap — resolves the actual cause rather than masking it, and comes with a 12-month warranty

A PS5 that suddenly restarts itself mid-game — no error message, no warning, just a snap back to the home screen or a full reboot — is one of the more unsettling faults to live with, mostly because it feels random. It rarely is. Once you look at when it happens and what else is going on at the time, a restart fault almost always falls into one of two camps: heat, or power delivery. Working out which one you’ve got is most of the diagnosis.

Software Restart or Hardware Restart? How to Tell

The single most useful thing you can do before assuming the worst is pay attention to the pattern. If the restarts only ever happen on one specific game or app, and everything else runs fine for hours, that’s a strong pointer toward a corrupted install, a save file issue, or a game-specific bug rather than anything wrong with the console itself. Rebuilding the database in Safe Mode and reinstalling that one title is worth trying first — it costs nothing and takes the software explanation off the table either way.

If the restarts happen across several unrelated games, on the dashboard, or even during something as undemanding as browsing the PS Store, that pattern points firmly at hardware. Software faults tend to be narrow and repeatable to a specific trigger; hardware faults tend to be broad and inconsistent, because the underlying cause — heat building up, or a voltage rail sagging — doesn’t care what’s on screen.

Overheating and the Liquid Metal Problem

The PS5 is unusual among consoles in using liquid metal, rather than standard thermal paste, between the APU and its heatsink straight from the factory. Liquid metal is excellent at moving heat when it’s fresh, but it can migrate and degrade over a few years of use in a way standard paste doesn’t in quite the same way. As that happens, heat transfer away from the chip gets worse, the console runs progressively hotter under sustained load, and eventually it hits a thermal cut-out and restarts itself as a protective measure rather than risk damage to the chip.

This is why overheating-related restarts tend to show up specifically during demanding, sustained gameplay — the exact conditions that push the APU hardest — rather than while the console is sat idle on the dashboard. A console that’s noticeably hot to the touch, or where the fan has been audibly working harder than usual in the lead-up to a restart, fits this pattern closely.

Power Supply and Board-Level Power Faults

The other common cause sits earlier in the chain: the power supply itself, or a specific power-delivery component on the board that regulates voltage to the APU and other chips. When one of these starts to fail, it can struggle to hold a stable voltage under the sudden current demand of a demanding game moment — a busy scene, a loading transition, a frame-rate spike — and the console restarts because the voltage briefly sagged below what the components need to keep running.

Power-related restarts are often less tied to heat and more genuinely unpredictable — they can happen during lighter use, at idle, or with no obvious pattern of load at all, which is usually the detail that separates them from a thermal fault in diagnosis.

What You Can Safely Check Yourself First

Before assuming the worst, a few checks are worth doing at home. Make sure the vents aren’t clogged with dust and the console has clear space around it — a restricted airflow path makes an existing thermal issue worse and can occasionally cause one on its own in a console that’s otherwise fine. Try rebuilding the database through Safe Mode, which can rule out a software-side cause quickly. And note whether the fault happens on both disc and digital games if you have a Disc Edition, since that helps distinguish a drive-related issue from a genuine power or thermal fault elsewhere on the board.

Why It’s Worth Addressing Rather Than Living With

Restart faults caused by heat or power delivery don’t tend to improve on their own, and in our experience they usually become more frequent over time rather than staying constant. Left long enough, a thermal fault can progress toward a console that won’t stay on at all, and continued operation at elevated temperatures can put stress on nearby components that were previously fine. Catching it at the “random restart” stage is generally a more straightforward repair than waiting until it’s a full no-power fault.

Frequently Asked Questions

Is a PS5 that restarts randomly always a hardware fault?

Not always, but it usually is. If the restarts happen across multiple different games and apps rather than one specific title, that points strongly to hardware — power delivery or overheating — rather than a single corrupted game file.

Can a software update fix random PS5 restarts?

It can in a minority of cases, particularly if the restarts are tied to one specific game or app. Rebuilding the database in Safe Mode and reinstalling the affected title is worth trying first, since it costs nothing and rules software out quickly.

Does PS5 liquid metal degrading actually cause restarts?

Yes. The PS5 uses liquid metal rather than standard thermal paste between the APU and heatsink from the factory. As it degrades over a few years, heat transfer worsens, the console runs hotter under load, and it can hit a thermal cut-out and restart mid-game as a protective measure.

How do I know if it’s the power supply and not overheating?

Overheating restarts tend to happen during sustained, demanding gameplay and are often preceded by louder fan noise or a console that feels hot to the touch. Power supply faults can restart the console even during lighter use, sometimes with no clear pattern of load at all, and can affect the console at idle or in menus too.

Is it safe to keep using a PS5 that restarts randomly?

It’s usable in the short term, but a restart fault caused by heat or power delivery rarely improves on its own and often gets more frequent over time. Continuing to run it hot can also risk further damage to nearby board components, so it’s worth having it looked at rather than living with it.

Will a PS5 repair fix random restarts for good, or could it happen again?

A correctly diagnosed board-level repair — replacing degraded liquid metal or a failing power component — resolves the fault properly rather than masking it. Saved Game’s board-level repairs come with a 12-month warranty for exactly this reason.

Can I send my PS5 for repair if I’m not local to Saved Game?

Yes. Saved Game repairs by mail-in UK-wide, so you don’t need to be nearby. You’ll get a diagnosis and an agreed price before any work starts.

Will I lose my save data if my PS5 is repaired for this fault?

In most cases, board-level power or thermal repairs don’t touch the storage drive, so saves are generally unaffected. It’s still worth backing up anything important beforehand, since some faults can mean storage needs replacing too.

Get Your PS5 Properly Diagnosed

If your PS5 is restarting during games, our PS5 repair page covers how we diagnose and fix this fault at board level. Send it in through our mail-in repair service and we’ll confirm the exact cause and an agreed price before touching anything — no fix, no fee. Current turnaround and repair pricing is on our repair prices page. Email james@savedgame.co.uk or open a ticket through the site if you’d like to check anything first.