Quick answer: If PEAK crashes or will not launch on Steam, verify its installed files first, remove custom launch options, update Windows and the graphics driver, then test with mods and overlays disabled. Reinstall only after those checks.
Before you start
- Restart the PC once and install pending Windows updates.
- Confirm the PC meets PEAK’s current requirements on its Steam page.
- Back up any local files you intentionally modified.
How to fix PEAK crashing on Steam
- Close Steam completely. Exit PEAK, then choose Steam > Exit. Restart Windows before the first retest.
- Verify game files. In Steam Library, right-click PEAK, choose Properties > Installed Files > Verify integrity of game files. Let Steam replace any mismatched files.
- Remove launch options. In PEAK Properties > General, clear any custom command from Launch Options. Test with the game’s defaults.
- Disable mods and injectors. Temporarily remove unofficial mods, ReShade, performance injectors, or custom DLLs. Update them separately before restoring them.
- Turn off overlays for one test. Disable Steam Overlay and third-party overlays such as Discord or GPU monitoring. Re-enable them one at a time after the game launches.
- Update the graphics driver. Install a current driver from NVIDIA, AMD, or Intel for the installed GPU, then restart. Avoid third-party driver-download sites.
- Check Windows security history. If a PEAK file was quarantined, restore it only when it is the legitimate Steam file, then verify the installation again. Do not broadly disable antivirus protection.
- Reinstall on a healthy drive. If verification repeatedly reports corruption or the crash continues, reinstall PEAK. Choose a different Steam library drive if the current drive reports errors.
Why these steps work
Most startup crashes come from a mismatched installation, unsupported launch command, outdated graphics stack, or software injected into the game process. Steam verification restores the official build; clean launch settings and overlay isolation reveal which optional component causes the conflict.
Alternatives
- Try Steam’s default branch if a beta branch is selected.
- Close unnecessary capture and hardware-monitoring tools.
- Check Steam Discussions and the developer’s official channels for a current known issue after an update.
Warnings
Do not download missing DLL files from random websites, delete Windows components, or permanently disable antivirus. Running every game as administrator can create permission and security problems; use it only if the developer explicitly documents it.
Frequently asked questions
Will verifying files erase progress?
Steam verification replaces installation files. It normally does not delete saves, but back up important local data before reinstalling.
Why does PEAK work after disabling an overlay?
Overlays inject display or capture code into the game. A conflict can crash the renderer before the main menu appears.
Should I use a beta branch?
Use the default branch while troubleshooting unless the developer specifically says a beta contains the fix.
Official references
- Steam Support: verify game files
- PEAK on Steam: requirements and updates
- Microsoft: update drivers in Windows
Source video
Transcript note: YouTube captions were unavailable after repeated checks. The guide uses Steam’s supported repair path and reversible Windows troubleshooting.
As an Amazon Associate I earn from qualifying purchases.