Error codes

0x000000BE

ATTEMPTED_WRITE_TO_READONLY_MEMORY

What it means

A driver tried to write to memory that is read-only.

Common causes

• A faulty or outdated driver
• Faulty RAM

How to fix it

1. Think about what changed just before it started (new driver, app, update or hardware) and undo that first. System Restore can roll back drivers without touching your files.
2. Open the crash dump in WhoCrashed or BlueScreenView: it usually names the driver file that caused it (for example nvlddmkm.sys is the NVIDIA driver).
3. Update the graphics, chipset and network drivers from the maker's site (NVIDIA, AMD, Intel or your board vendor), not from a driver-updater tool.
4. Test the RAM: run Windows Memory Diagnostic (search mdsched) or MemTest86 from a USB stick. Any error means a stick or its speed setting is the problem.