How to Fix Most PC Game Errors and Improve Performance (10 Steps) 😺

Hello beautiful people! 👋 Yosh here. Games crashing at launch, stuttering mid-match, or throwing DLL errors? This 10-step PC game fix checklist covers the fixes that solve most Windows 10/11 problems — in the order that saves you the most time. Nando gives it two paws up. 😼

Official fixes only: We use Windows settings, store repair tools, and Microsoft/NVIDIA/AMD downloads. No cracks, no random DLL sites, no "optimizer packs" from unknown sources. You've got this! ✌
Fix PC game errors and improve performance on Windows

How to Fix Most PC Game Errors and Improve Performance (10 Steps) 😺

Before you chase random forum fixes, run through this sequence. It clears most launch crashes, stutter, missing DLL errors, and low FPS on gaming PCs and laptops.

Step 1 – Restart and update GPU drivers

A full reboot clears stuck GPU drivers and hung launcher processes. Then update graphics drivers from the official source — not third-party driver updaters.

If crashes started after a driver update, try a clean reinstall from the same official pages. GeForce Experience and AMD Software can optimize per-game settings once drivers are current.

Step 2 – Verify game files (Steam / Epic / GOG)

Corrupted installs cause silent crashes, infinite loading, and missing file errors.

  • Steam: Properties → Installed Files → Verify integrity of game files
  • Epic / GOG: use the built-in repair or verify option in the launcher

Reboot after repair finishes, then test launch before changing other settings.

Step 3 – Install official runtimes (VC++ and DirectX)

Most PC games need Microsoft Visual C++ and legacy DirectX components. Install only from Microsoft:

For specific errors, see our 0xc000007B fix and missing DLL guide — never download single DLLs from mirror sites.

Step 4 – Allow the game through antivirus and firewall

Windows Security can quarantine game exes or block online handshake at launch.

  1. Windows Security → Virus & threat protection → Manage settings → Exclusions → add the game's install folder
  2. Windows Defender Firewall → Allow an app → browse to the game .exe → enable Private and Public
  3. Check quarantine and restore false positives before reinstalling

Step 5 – Disable overlays (test one at a time)

Overlays hook into games early and cause black screens, stutter, or instant closes.

  • Steam in-game overlay
  • Discord overlay
  • Xbox Game Bar (Win + G → Settings → disable)
  • GeForce Experience / AMD overlay recorders

Disable one overlay, test the game, repeat — so you know which one caused the conflict.

Update NVIDIA or AMD GPU drivers for better PC game performance

Step 6 – Force dedicated GPU (laptops)

If you have Intel integrated + NVIDIA/AMD discrete graphics, Windows may launch games on the wrong chip — low FPS, crashes, or "invalid graphics device" errors.

  1. Settings → System → Display → Graphics
  2. Add the game .exe → High performance (dedicated GPU)
  3. In NVIDIA Control Panel or AMD Software, set the game to maximum performance when plugged in

Step 7 – Compatibility and admin (diagnose only)

Older titles sometimes need compatibility mode or elevated launch — use these to test, not as permanent hacks.

  • Right-click .exe → Run as administrator once — if it fixes launch, fix folder permissions instead of leaving admin on
  • Compatibility tab → try Windows 8 or Windows 7 for legacy games
  • Steam launch options: -windowed or -dx11 when a game supports API switching

Step 8 – Lower settings and cap FPS (performance)

Borderline hardware often shows as stutter, not a clean error message.

  • Drop resolution one step; disable ray tracing and heavy shadows first
  • Test fullscreen exclusive vs borderless — best mode varies per game
  • Cap FPS slightly below monitor refresh (e.g. 141 on 144 Hz) to smooth frame times
  • Close Chrome tabs — each eats RAM and GPU video decode
  • High performance power plan when gaming on laptop AC power

Not sure if your PC is strong enough? Use our system requirements tools guide.

Step 9 – Fix online and login errors

Launch crashes and login failures are different beasts.

  • Flush DNS: CMD as admin → ipconfig /flushdns
  • Disable VPN/proxy unless the game requires a specific region
  • Check publisher server status before blaming your PC
  • For Riot games: see League unexpected login fix

Step 10 – Repair Windows and reinstall clean

Last resort before a support ticket:

  1. CMD as admin: sfc /scannow then DISM /Online /Cleanup-Image /RestoreHealth
  2. Reinstall the game to an SSD with a simple path (e.g. C:\Games\Title) — no special characters
  3. Keep Windows Update current — Settings → Windows Update
  4. Optional FPS boost: Task Manager → Details → game .exe → Set priority → High (never Realtime on laptops)

Game-specific guides on PressCatToStart

When a title has a known quirk, a focused guide beats generic steps:

FAQ

One game broken, others fine?
Verify that game first, then check game-specific guides above. Generic steps 1–6 usually fix it.

Errors after Windows Update?
Reinstall VC++ x86 + x64 and GPU drivers, then run SFC/DISM.

Controller or Steam issues?
See Steam controller setup and play any game with a controller.

Related: Game Fixes · PC Tools

More PC game fixes: PressCatToStart – from Yosh 😼

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