PC Crashing While Gaming With GPU at 100%? Causes and Fixes

If your PC keeps crashing while gaming and the graphics card sits at 100 percent, the good news is that a pinned GPU is normal during demanding games. The problem is what happens next: heat, power draw, drivers, or unstable settings can push a perfectly fine card into a crash, black screen, or reboot. This guide helps you separate normal full load from real trouble, then walks through fixes for crashes, a misbehaving GPU driver, and the case where the PC does not recognize the GPU after a BIOS change or update.

Is GPU at 100 Percent a Problem?

Not by itself. When a game has no frame cap and VSync is off, the GPU works as hard as it can to draw more frames, which shows up as 100 percent usage. That is the card doing its job. Usage becomes a warning sign only when it comes with symptoms:

• The game or PC crashes after a predictable amount of time.
• The screen goes black while sound continues, or the driver “stopped responding and has recovered.”
• Fans ramp up to maximum and temperatures keep climbing.
• The system reboots suddenly, which often points to the power supply.
• You see flickering, colored dots, or stretched shapes, which can suggest artifacts from heat or unstable memory.

To check what is happening, press Ctrl + Shift + Esc, open the Performance tab, and select GPU. Watch usage, dedicated memory, and temperature during play. If usage is high but the game runs smoothly and does not crash, no action is needed. If the game crashes, work through the steps below in order.

Step 1: Cap the Frame Rate to Lower Load

Capping frames is the simplest way to cut heat and power without noticeably hurting the experience.

1. Open the game’s video settings and set a frame limit that matches your monitor’s refresh rate, or slightly below it.
2. Turn on VSync or a variable refresh option such as G-SYNC or FreeSync if your display supports it.
3. Lower one or two heavy settings, such as shadows or ray tracing, and see whether crashes stop.

If the crash disappears with a lower load, the cause is heat, power, or driver instability under stress rather than a damaged game. Pairing a cap with the right display setup is covered in our guide to the best refresh rate for gaming.

Step 2: Reinstall the GPU Driver Cleanly

A damaged or mismatched driver is a very common reason for a GPU driver “acting up.”

1. Download the latest driver for your card from the NVIDIA, AMD, or Intel website, and save it to your desktop.
2. Open Settings, go to Apps, Installed apps, and uninstall the existing graphics driver and its control software.
3. Restart the PC. For a deeper cleanup, many users boot into Safe Mode and use a trusted driver removal utility.
4. Run the new driver installer. If it offers a clean install option, select it.
5. Restart again and test the game.

If crashes began right after a driver update, try the previous version: open Device Manager, expand Display adapters, right-click the card, choose Properties, open the Driver tab, and click Roll Back Driver where available.

Step 3: Check Temperatures and Airflow

Heat is the next most likely cause. A GPU that throttles or hits its thermal limit can crash the driver.

1. Install a monitoring tool such as HWiNFO or MSI Afterburner and watch GPU temperature and hot-spot temperature while gaming.
2. Open the case and check for dust on the heatsink, fans, and filters. Clean with compressed air, holding fans still so they do not spin too fast.
3. Confirm every GPU fan spins under load.
4. Check that the case has clear intake and exhaust paths and that cables are not blocking fans.
5. Make sure the PC is not tucked in a closed cabinet.

Temperature limits differ by card and manufacturer, so check your GPU maker’s published thermal specifications instead of relying on a single number from a forum.

Step 4: Check Power Supply and Cables

Modern GPUs can have sharp power spikes. A power supply that is too small, aging, or poorly connected can cause sudden shutdowns or driver resets under load.

• Reseat the GPU power connectors at both ends and make sure they click in fully.
• Use a separate cable for each connector when the card needs more than one, instead of a single daisy-chained cable, if your power supply provides separate leads.
• Compare your power supply’s wattage and connector type with your GPU manufacturer’s stated requirement.
• Avoid adapters you do not trust.
• Remove any overclock or undervolt profile and test at stock settings.

If you are planning an upgrade to a power-hungry card, review the requirements in our overview of the best gaming GPU featuring the RX 9070 XT before you buy.

Step 5: Fix a GPU the PC Does Not Recognize After a BIOS Change

If the PC stopped detecting the graphics card after a BIOS update, a reset, or a setting change, the cause is usually a changed firmware option rather than a dead card.

1. Power off, unplug the PC, and reseat the GPU firmly in its slot, with power cables connected.
2. Connect the monitor cable to the graphics card output, not the motherboard.
3. Enter the BIOS (commonly by pressing Delete or F2 at startup) and load the default or optimized settings.
4. Look for the primary display or initial graphics option and set it to PCIe or the discrete GPU instead of integrated graphics.
5. Check the PCIe slot speed option. If it is set to a generation the card or board does not handle well, try Auto.
6. Enable settings your board needs for modern cards, such as Above 4G Decoding or Resizable BAR, only if your motherboard manual calls for them.
7. Save and restart.

After Windows loads, open Device Manager and look under Display adapters. If the card appears with a warning icon, reinstall the driver. If it is missing entirely, try another PCIe slot or a different power cable. If the BIOS update itself caused the issue, check the motherboard maker’s notes for the version, and consider contacting their support before attempting to flash an older version.

Step 6: Check Memory, Storage, and Windows Health

Not every crash is the GPU’s fault. System memory errors and corrupted files can produce the same symptoms.

1. Open Command Prompt as administrator and run sfc /scannow, then DISM /Online /Cleanup-Image /RestoreHealth.
2. Run the Windows Memory Diagnostic: press the Windows key, type it, and choose to restart and check.
3. If you use an XMP or EXPO memory profile, disable it temporarily to see if crashes stop.
4. Check Event Viewer: open Windows Logs, then System, and look for errors such as display driver or Kernel-Power events around the crash time.
5. Keep Windows updated under Settings, Windows Update.

The Event Viewer entries are especially useful: Kernel-Power events often hint at power problems, while display driver errors point to the GPU or its driver.

When the Hardware May Be at Fault

If you have tried every step and the system still crashes, test components one at a time. Try the GPU in another PC, or a different known-good GPU in yours. Visual artifacts that appear even on the desktop point to a failing card. If the card is under warranty, contact the manufacturer for support instead of opening or modifying it. If an old system is struggling in general, comparing parts in our guide to the best budget gaming PC may help you decide whether an upgrade is worthwhile.

FAQ

Is it bad if my GPU runs at 100 percent while gaming?

No. High usage means the card is being fully used. It becomes a concern only if temperatures are very high, the game crashes, or the system restarts.

Why does my PC crash only in demanding games?

Demanding games push heat and power to the highest levels, which exposes weak cooling, an underpowered or loose power supply, unstable overclocks, or driver problems.

Can a BIOS update stop my PC from detecting the GPU?

Yes. Updates can reset options such as primary display, PCIe settings, or Above 4G Decoding. Load defaults, reseat the card, and check these options in the BIOS.

Should I use DDU or a normal uninstall for drivers?

A standard uninstall followed by a clean install option often works. A dedicated removal tool in Safe Mode is a deeper reset if problems persist.

Could my power supply cause GPU crashes?

It can. Sudden power spikes may trip protection in a weak or aging unit, causing reboots or black screens. Check wattage, connectors, and cable seating against your GPU maker’s guidance.