Genius Sound Maker Value 5.1 Crackling Sound

Hello,
I upgraded my Win XP to Win 7 like 1 month ago.
Downloaded all drivers (from their sites) updated them... then i open WMP 11 and start playing some music. After listening to that i heard some weird sound lag, I believe its called crackling. I searched on internet found some solutions, but none worked and none was for mine sound card.
This wasn't happening on Win XP.
Oh and if i have older version of driver it works way batter (only hear crackling when my cpu goes up to 1000MB (100%) ), but then my Microphone goes really quiet like I disabled microphone boost.

Hope you understand my problem.

OTHER SYSTEM SPECS (My PC is old):

Code:

"Windows","Windows 7 Home Premium Edition (Build 7600)"
"Internet Explorer","9.0.8112.16421"
"Memory (RAM)","1023 MB"
"CPU Info","Intel(R) Pentium(R) 4 CPU 2.80GHz"
"CPU Speed","2802,0 MHz"
"Sound Card","Speakers (C-Media PCI Audio Dev)"
"Display Adapters","NVIDIA GeForce FX 5600 | NVIDIA GeForce FX 5600 | RDPDD Chained DD | RDP Encoder Mirror Driver | RDP Reflector Display Driver"
"Monitors","1x; Generic PnP Monitor | "
"Screen Resolution","1024 X 768 - 32 bit"
"Network","Network Present"
"Network Adapters","VIA Rhine II Fast Ethernet Adapter | Hamachi Network Interface"
"CD / DVD Drives","2x (D: | E: | ) D: _NEC    DVD_RW ND-2500A  | E: DTSOFT  BDROM"
"Ports","COM1 LPT1"
"Mouse","5 Button Wheel Mouse Present"
"Hard Disks","C:  149,0GB"
"Hard Disks - Free","C:  71,0GB"
"USB Controllers","5 host controllers."
"Firewire (1394)","Not Detected"
"Manufacturer *","Phoenix Technologies, LTD"
"Product Make *"," "
"AC Power Status","OnLine"
"BIOS Info","AT/AT COMPATIBLE | 06/08/06 | ACRSYS - 42302e31"
"Time Zone","Srednjeevropski standardni čas"
"Battery Status","No Battery"
"Motherboard *","P4M800CE-8237"
"SM BIOS","6.00 PG"