Engine Error: Could not load library client, (Please help)

[Thieflord]

Whenever I try to play Garrys mod, it gives me this error, It has been happening since GMod 13, I have tried everything suggested, and Garry has not come up with any fix for specific peoeple like me, I have a friend with the exact same problem, similar computer setup, I have tried the following;
* Restarting Steam
* Reinstalling Steam
* Reinstalling Gmod (Deleting local content)
* Deleting GMod Bin folder
* Deleting Gmod/Gmod bin folder
* Deleting all of Gmod from steam apps
* Completely deleting all of Steam and games
* Swapping and replacing {Username}/GMod and {Userrname}/Gmod/Gmod
* Logging in on a differant account and attempting to play (same computer
* Steam client repair service
* Disabling Anti Virus

All of my other source games work including Counterstrike Source, and Team fortress 2.

* Operating System
Microsoft Windows 7 Home Premium 64-bit SP1

* CPU: Intel Core i5 2430M @ 2.40GHz; Sandy Bridge 32nm Technology

* RAM: 6.00 GB Dual-Channel DDR3 @ 665MHz (9-9-9-24)

* Motherboard: Hewlett-Packard 1659 (CPU1)

* Graphics: Generic PnP Monitor (1600x900@60Hz); Radeon HD 6490M (HP)

* Hard Drives: 699GB TOSHIBA MK7575GSX (SATA)

* Optical Drives: hp BD CMB UJ141AF

* Audio IDT: High Definition Audio CODEC

I havn't even played Garry's Mod 13 yet because of this error, it's frustrating me deeply, please halp, thx

[Thieflord]

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[Thieflord]

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