Most of these faults trace back to software or heat, not a dead component. Below is an ordered, South African gaming checklist for the symptom in the heading, written so each step is something you can verify yourself before booking a repair or buying a replacement.
Quick Answer
Most of these faults trace back to software or heat, not a dead component. This usually comes down to the Wi-Fi adapter, a loose connector or background load rather than a faulty Gen 5 NVMe SSD. Run a fixed 20-minute test after each change and keep the one that holds at a steady frame rate or a stable temperature under 85C.
Radio and driver checks
Update the Wi-Fi 6E or 7 driver and toggle the adapter power-saving setting off so it stops dropping during long sessions. Forget and re-add the SSID after a Windows update resets the saved channel and band.
PSU and connector checks
Set the Windows power plan to High performance so the CPU is not parked at low clocks during games. Set the Windows power plan to High performance so the CPU is not parked at low clocks during games.
Software and firmware checks
Roll the GPU driver back to the last stable release, then do a clean reinstall using DDU so leftover files do not clash. Roll the GPU driver back to the last stable release, then do a clean reinstall using DDU so leftover files do not clash.
Plan a baseline budget of around R2,500 before you start.
FAQ
Does heat explain random crashes?
Often. A CPU sitting at 95C or a GPU hotspot past 100C will throttle or shut down to protect itself, so log temperatures across a full session rather than reading one quick number.
Is it safe to keep using the PC like this?
If it shuts down or blue-screens, stop heavy loads until you find the cause. Repeated hard crashes can corrupt the boot drive, so back up your data before deep testing.
How do I know it is not the GPU driver?
Run DDU in safe mode and install one clean driver. If the symptom vanishes you found it; if it returns, move on to heat, power and memory checks.
Pro Tip
Write down the temperature, driver version and BIOS revision before and after each change so you can prove which step fixed it.