Windows 7: APP Crash/ Host Process Error

ALL of my steam games give me an Appcrash as such when I try opening them up:

HL2.exe has stopped working

Problem signature:
Problem Event Name: BEX
Application Name: hl2.exe
Application Version: 0.0.0.0
Application Timestamp: 4c0de821
Fault Module Name: StackHash_b4ee
Fault Module Version: 0.0.0.0
Fault Module Timestamp: 00000000
Exception Offset: 005e0000
Exception Code: c0000005
Exception Data: 00000008
OS Version: 6.1.7600.2.0.0.768.3
Locale ID: 1033
Additional Information 1: b4ee
Additional Information 2: b4ee5de6a2322745523997a782b35692
Additional Information 3: 277e
Additional Information 4: 277e19c30fbd5f6bb531ec9e027c37c3


I have updated windows 7, AND did a system restore; reinstalling steam right after the restore. But it doesn't seen to work. I checked the forums and tried the example where you change the Data Execution Prevention (DEP) to "turn on DEP for all programs and services except those I select:" and that worked (after the restart). But as soon as I turned my computer off for a few hours and came back on to play, I got the same errors I was always getting.



I'm also getting these STUPID horrible messages when I type for too long:

Host Process for Windows has Stopped Working

Problem signature:
Problem Event Name: BEX
Application Name: svchost.exe
Application Version: 6.1.7600.16385
Application Timestamp: 4a5bc100
Fault Module Name: mck_ibnhiswgg.dll
Fault Module Version: 2.2.2.1571
Fault Module Timestamp: 4b639291
Exception Offset: 0001c58b
Exception Code: c000000d
Exception Data: 00000000
OS Version: 6.1.7600.2.0.0.768.3
Locale ID: 1033
Additional Information 1: c869
Additional Information 2: c869d05ada7f2493cf194fd869e42985
Additional Information 3: b690
Additional Information 4: b690ecf261220fc49f459bd2fc4bbd88


I don't know if they are related, but I have updated both Java and Adobe (the only two things I can think of). Please help, my head is about to explode...

any body?

Bump