Please help about Cannot run DTaskManager.exe or hl.exe (Half-life)

Hi all,

My computer is using Win 7, I could run these software before, but recently, I cannot.
When I click it to run, it just show up few seconds in Task Manager. And close, and window doesn't show any message about error or what's happening.

When I check Windows Logs in Event Viewer, at Application, I found these messages:
Faulting application name: DTaskManager.exe, version:, time stamp: 0x47a80be8
Faulting module name: unknown, version:, time stamp: 0x00000000
Exception code: 0xc0000005
Fault offset: 0x0024258c
Faulting process id: 0x1190
Faulting application start time: 0x01cc2a448f9e5a17
Faulting application path: G:\Software\[System] DTaskManager 1.51\DTaskManager.exe
Faulting module path: unknown
Report Id: d2f069a7-9637-11e0-a201-1c6f65bfd423

Fault bucket 2039211025, type 5
Event Name: BEX
Response: Not available
Cab Id: 0

Problem signature:
P1: DTaskManager.exe
P3: 47a80be8
P4: StackHash_3a51
P6: 00000000
P7: 0024258c
P8: c0000005
P9: 00000008

Attached files:

Did anyone have this trouble before? please help me.

Thank you very much.

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