When an anti-cheat issues an HWID ban, it does not "remember your computer" in some vague way — it stores a set of values read from your real hardware. Knowing what those are makes it clear what an HWID change actually does.
What an anti-cheat reads
Kernel-level anti-cheats — Vanguard, Easy Anti-Cheat, BattlEye — build your hardware fingerprint from four groups of identifiers:
- Motherboard and BIOS — the system ID and serial numbers stored in firmware.
- Drives — the serial number of the disk and of the Windows volume.
- Network adapters — the MAC address of each physical network card.
- Processor — the CPU model string.
These values are combined into one fingerprint. If enough of them match a banned PC, the anti-cheat treats it as the same machine.
What HWIDChanger changes
HWIDChanger changes the identifiers that live in Windows and on your drives — the Windows IDs, the disk volume serial and the network adapter (MAC) addresses. For most software DRM and for game anti-cheats up to the BattlEye level, that is enough to look like a new device.
Some identifiers are stored in firmware — the motherboard ID, the BIOS serial, the CPU string. Those cannot be changed by software at all, and it is honest to know that up front. Against the strictest kernel anti-cheats such as Vanguard, a software HWID change may not be enough, and a hardware change is the only sure route.
Before you change anything
Two things worth keeping in mind:
- HWIDChanger saves your current state to your account before every change, so you can always roll back.
- If your Windows is activated with a licence tied to your hardware, changing the disk and network identifiers may require re-activating Windows. If that matters to you, check your activation type first.
FAQ
Can an anti-cheat see my exact CPU model?
Yes. The CPUID instruction returns vendor and model strings to anything that asks — kernel or user mode — and anti-cheats read it routinely. CPUID is firmware-level and not changeable by ordinary software.
Will reinstalling Windows reset what anti-cheats see?
Partially. The identifiers Windows itself generates — Machine GUID, HwProfileGuid — reset on a clean install. Hardware identifiers — motherboard serial, SMBIOS UUID, disk and CPU IDs — stay, because they live in firmware. The anti-cheat still recognises most of the profile.
Does a VPN hide my hardware fingerprint?
No. A VPN hides your IP address; an HWID change covers the hardware-identity layer. They are different protections for different parts of the same problem.
Why does it matter that modern anti-cheats run in kernel mode?
User-mode software has limited access to SMBIOS, raw disk controllers and the TPM. Kernel anti-cheats read these directly, getting a fuller and more tamper-resistant view of the hardware than any user-mode tool could match.
Could two different PCs end up with the same HWID?
In practice, no. Each component contributes its own identifier — SMBIOS UUID alone is a 128-bit value — and the combined profile is statistically unique even on identically-configured systems. Anti-cheats rely on this when issuing per-PC bans.
In short
For most games and DRM, a software HWID change is enough to get a fresh fingerprint. For the most aggressive anti-cheats it has limits — no tool can rewrite firmware. Always change with a backup in place, which HWIDChanger does for you automatically.