Brand New Computer Abruptly Restarting

[onearmedbandit]

Hi, I just got a brand new computer and it's having some problems which I believe are graphics-related.

The symptoms are that during some games (CSS, BFBC2) it will randomly restart, and on others (Shogun 2) it will restart straight away. It also restarts a few seconds after running a 3D test on ATI Tool. During the ATI Tool test I can hear a high-pitched whizzing sound coming from the card (coil whine?) which doesn't sound right. It's definitely not overheating because it'll do it when the card isn't even warm!

I tried using my old 8800GT card in the same system and had no problems at all.

So I have tried, in progressing order of desperation:
- Reinstalling the latest drivers
- Reinstalling Windows
- Taking the card back to the shop, where I got a replacement card, but it does the same thing :-/


I'm becoming increasingly exasperated. The people at the shop were also convinced that it was a faulty card, but it's still doing it! So either the replacement card is also faulty, or it's something else. But as I said, there were no problems with the 8800GT so I'm stumped!

I've copied the first part of my DxDiag file. Let me know if you need to see more. Thanks a lot!

------------------
System Information
------------------
Time of this report: 8/22/2011, 18:49:45
Machine name: MIKE-PC
Operating System: Windows 7 Professional 64-bit (6.1, Build 7600) (7600.win7_gdr.110622-1503)
Language: English (Regional Setting: English)
System Manufacturer: System manufacturer
System Model: System Product Name
BIOS: BIOS Date: 02/05/10 19:13:52 Ver: 08.00.10
Processor: Intel(R) Core(TM) i5-2500K CPU @ 3.30GHz (4 CPUs), ~3.3GHz
Memory: 4096MB RAM
Available OS Memory: 4078MB RAM
Page File: 2067MB used, 6085MB available
Windows Dir: C:\Windows
DirectX Version: DirectX 11
DX Setup Parameters: Not found
User DPI Setting: Using System DPI
System DPI Setting: 96 DPI (100 percent)
DWM DPI Scaling: Disabled
DxDiag Version: 6.01.7600.16385 64bit Unicode

------------
DxDiag Notes
------------
Display Tab 1: No problems found.
Sound Tab 1: No problems found.
Sound Tab 2: No problems found.
Sound Tab 3: No problems found.
Sound Tab 4: No problems found.
Input Tab: No problems found.

--------------------
DirectX Debug Levels
--------------------
Direct3D: 0/4 (retail)
DirectDraw: 0/4 (retail)
DirectInput: 0/5 (retail)
DirectMusic: 0/5 (retail)
DirectPlay: 0/9 (retail)
DirectSound: 0/5 (retail)
DirectShow: 0/6 (retail)

---------------
Display Devices
---------------
Card name: AMD Radeon HD 6800 Series
Manufacturer: Advanced Micro Devices, Inc.
Chip type: ATI display adapter (0x6738)
DAC type: Internal DAC(400MHz)
Device Key: Enum\PCI\VEN_1002&DEV_6738&SUBSYS_31011682&REV_00
Display Memory: 2795 MB
Dedicated Memory: 1012 MB
Shared Memory: 1782 MB
Current Mode: 1680 x 1050 (32 bit) (60Hz)
Monitor Name: Generic PnP Monitor
Monitor Model: L226W
Monitor Id: GSM566B
Native Mode: 1680 x 1050(p) (59.883Hz)
Output Type: DVI
Driver Name: aticfx64.dll,aticfx64.dll,aticfx64.dll,aticfx32,aticfx32,aticfx32,atiumd64.dll,atidxx64.dll,atidxx64 .dll,atiumdag,atidxx32,atidxx32,atiumdva,atiumd6a.cap,atitmm64.dll
Driver File Version: 8.17.0010.1091 (English)
Driver Version: 8.881.0.0
DDI Version: 10.1
Driver Model: WDDM 1.1
Driver Attributes: Final Retail
Driver Date/Size: 7/28/2011 22:39:14, 852992 bytes
WHQL Logo'd: Yes
WHQL Date Stamp:
Device Identifier: {D7B71EE2-2478-11CF-7171-0B11BEC2C535}
Vendor ID: 0x1002
Device ID: 0x6738
SubSys ID: 0x31011682
Revision ID: 0x0000
Driver Strong Name: oem10.inf:ATI.Mfg.NTamd64.6.1:ati2mtag_NI:8.881.0.0ci\ven_1002&dev_6738
Rank Of Driver: 00E62001
Video Accel: ModeMPEG2_A ModeMPEG2_C

[watercooled]

What power supply are you using?

[onearmedbandit]

What power supply are you using?

Thermaltake Toughpower 750w ... it should be good enough I think

[watercooled]

Working it should be, but a faulty PSU could cause these problems, do you have another one to try with?