Frame rate stutter. HP Pavilion dv7-2185dx (completly new laptop)

I have a HP Pavilion dv7-2185dx, and let me start out by saying that this thing is freakin awsome. I only encountered one problem, and i can't find it on the web anywhere. When searching for frame rate stutters, i only found it mentioned on SLI or Crossfire cards.

When playing any games (I tried it on Team Fortress 2, Half Life 2 , episode 1,2, Conter Strike: Source, and Unreal tournament 2004 [which i believe runs on a different engine, so that rules engine incompatibility out) they all have excelent fps, but they all have sudden stutters. For a fraction of a second the fram rate drops into like the 5-10 zone. even when i put all settings low and get 120, 130 fps this happpens (and if i noticed it right, it happened on low in tf2, more than on high). And on high i usually get no less than 70 fps (but also with the drops to 5). I have downloaded the newest graphic drivers from the hp website. And this is an out of the box laptop. The only things i did where make a system recovery disk and install/run the game. It is less than a week old. I have included all the information found under dxdiag, under the sytem tab and under graphics.

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System Information
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Operating System: Windows Vista™ Home Premium (6.0, Build 6001) Service Pack 1 (6001.vistasp1_ldr.090302-1506)
Language: English (Regional Setting: English)
System Manufacturer: Hewlett-Packard
System Model: HP Pavilion dv7 Notebook PC
BIOS: Default System BIOS
Processor: Intel(R) Core(TM)2 Quad CPU Q9000 @ 2.00GHz (4 CPUs), ~2.0GHz
Memory: 6110MB RAM
Page File: 1811MB used, 10601MB available
Windows Dir: C:\Windows
DirectX Version: DirectX 10
DX Setup Parameters: Not found
DxDiag Version: 6.00.6001.18000 64bit Unicode

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Display Devices
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Card name: ATI Mobility Radeon HD 4650
Manufacturer: ATI Technologies Inc.
Chip type: ATI Radeon Graphics Processor (0x9480)
DAC type: Internal DAC(400MHz)
Device Key: Enum\PCI\VEN_1002&DEV_9480&SUBSYS_3624103C&REV_00
Display Memory: 3815 MB
Dedicated Memory: 1016 MB
Shared Memory: 2799 MB
Current Mode: 1600 x 900 (32 bit) (60Hz)
Monitor: Generic PnP Monitor
Driver Name: atidxx32,atidxx64.dll,atiumdag,atiumdva,atiumd64.dll,atiumd6a.cap,atitmm64.dll
Driver Version: 7.15.0010.0163 (English)
DDI Version: 10.1
Driver Attributes: Final Retail
Driver Date/Size: 2/8/2009 19:35:40, 2340352 bytes
WHQL Logo'd: Yes
WHQL Date Stamp:
Device Identifier: {D7B71EE2-D7C0-11CF-FA71-2E16A1C2CA35}
Vendor ID: 0x1002
Device ID: 0x9480
SubSys ID: 0x3624103C
Revision ID: 0x0000
Revision ID: 0x0000
Video Accel: ModeMPEG2_A ModeMPEG2_C
Deinterlace Caps: {6E8329FF-B642-418B-BCF0-BCB6591E255F}: Format(In/Out)=(YUY2,YUY2) Frames(Prev/Fwd/Back)=(0,0,1) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY DeinterlaceTech_PixelAdaptive
{335AA36E-7884-43A4-9C91-7F87FAF3E37E}: Format(In/Out)=(YUY2,YUY2) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY DeinterlaceTech_BOBVerticalStretch
{5A54A0C9-C7EC-4BD9-8EDE-F3C75DC4393B}: Format(In/Out)=(YUY2,YUY2) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY
{6E8329FF-B642-418B-BCF0-BCB6591E255F}: Format(In/Out)=(UYVY,UYVY) Frames(Prev/Fwd/Back)=(0,0,1) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY DeinterlaceTech_PixelAdaptive
{335AA36E-7884-43A4-9C91-7F87FAF3E37E}: Format(In/Out)=(UYVY,UYVY) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY DeinterlaceTech_BOBVerticalStretch
{5A54A0C9-C7EC-4BD9-8EDE-F3C75DC4393B}: Format(In/Out)=(UYVY,UYVY) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY
{3C5323C1-6FB7-44F5-9081-056BF2EE449D}: Format(In/Out)=(NV12,0x3231564e) Frames(Prev/Fwd/Back)=(0,0,2) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY DeinterlaceTech_PixelAdaptive
{552C0DAD-CCBC-420B-83C8-74943CF9F1A6}: Format(In/Out)=(NV12,0x3231564e) Frames(Prev/Fwd/Back)=(0,0,2) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY DeinterlaceTech_PixelAdaptive
{6E8329FF-B642-418B-BCF0-BCB6591E255F}: Format(In/Out)=(NV12,0x3231564e) Frames(Prev/Fwd/Back)=(0,0,1) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY DeinterlaceTech_PixelAdaptive
{335AA36E-7884-43A4-9C91-7F87FAF3E37E}: Format(In/Out)=(NV12,0x3231564e) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY DeinterlaceTech_BOBVerticalStretch
{5A54A0C9-C7EC-4BD9-8EDE-F3C75DC4393B}: Format(In/Out)=(NV12,0x3231564e) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY
DDraw Status: Enabled
D3D Status: Enabled
AGP Status: Enabled

The hard drive is what i originally thought. But then i looked at the hard drive indicator, it stays lit at full during loading, and during the game just lights up every few moments. The cpu is a pluasible explanation but the stutters happen sometimes in less than 1 minute intervals; also i have the power managment set on high performance, so it shouldnt be going into powersave mode that fast. And i played the game on much worse laptops (20 fps) and there was no stutter at all. this problem would be understandable on a laptop with 20 fps, but 120 with dips below 5, i do not understand that.

Check to see if there's a BIOS update, maybe hit up the latest Intel Chipset drivers.

i returned the laptop, said that the graphics card was shot. got a new one completely the same and theres no more stutters (or so little that i can't notice them). Even the hl2 lost coast vidoe stress test doesnt get choppy (it did before). So i dont know was it the laptop or was it some setting on the laptop.