I just finished putting my new gaming PC build together yesterday, installed Windows 7 and all the drivers and utilities for the motherboard, graphics card, optical drive etc. then downloaded all available Windows updates.
Next I downloaded Steam, and started downloading a couple of games including Total War: Shogun 2 and The Elder Scrolls V: Skyrim. After a while, the computer completely froze, leaving both the mouse and keyboard unresponsive, including the ctrl + alt + delete function. So I turned off by holding the power button and rebooted. When I tried to restart Steam, I received an error message that I copied into Google, and found a fix on the Steam forums that involved deleting everything in the Steam install folder except the Steam.exe and the Steamapps folder. I did this, and Steam downloaded some client updates again, and continued downloading the two games. On this occasion I blamed Steam due to the error message.
However, I left the computer unattended for a while to let the games download, and when I returned the exact same thing happened - the computer had completely froze on the screensaver, leaving the mouse and keyboard unresponsive. I turned off again by holding the reset button, but as it was late at night I left it off for the night.
Booted up again this morning - NO error message from Steam. I'd lost a few hundred MBs of downloads for the two games, so I restarted the downloads once more.
Meanwhile, I installed Empire: Total War on Steam using the DISK, paused the other two downloads while it updated, then launched the game to test the power of my new computer. Everything seemed to work fine on the highest settings playing the Tutorial (small maps/battles), so I then created a custom battle with two HUGE armies to push it to the limit. Once again, the same kind of total freeze happened just before the loading bar had filled up. I rebooted, loaded up Empire: Total War again and tried the exact same thing, and it froze at exactly the same position on the loading bar.
Now I remember on my last desktop years ago when I took it into a local computer workshop to upgrade the graphics card (as I knew nothing about computers then, and still don't know much more now), which would have been in 2006, there computer would hang after a while, and after taking it back I was told there was some sort of incompatibility with the graphics card, although I can't remember any details. Could this therefore be a problem with the graphics card, or is it something else? Any help and suggestions would be much appreciated, as I'm currently very distraught by the amount of money I have just spent on a computer that hangs all the time!
Here's the DxDiag information. I've cut all the gobbledygook out from the bottom of it but if that's required please just ask.
Time of this report: 8/3/2012, 12:30:24
Machine name: RAB-PC
Operating System: Windows 7 Home Premium 64-bit (6.1, Build 7601) Service Pack 1 (7601.win7sp1_gdr.120503-2030)
Language: English (Regional Setting: English)
System Manufacturer: To Be Filled By O.E.M.
System Model: To Be Filled By O.E.M.
BIOS: BIOS Date: 10/18/11 22:54:01 Ver: 04.06.04
Processor: Intel(R) Core(TM) i7-3820 CPU @ 3.60GHz (8 CPUs), ~3.6GHz
Memory: 8192MB RAM
Available OS Memory: 8146MB RAM
Page File: 2133MB used, 14155MB 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: 6.01.7601.17514 32bit Unicode
Display Tab 1: No problems found.
Sound Tab 1: No problems found.
Sound Tab 2: No problems found.
Input Tab: No problems found.
also check the mb vendor web page for bios updates. with the z77 chipset there new bios code for the ib cpu and ram updates.
i would also run cpu-z and see if your mb set up the ram speed and timing right. most times weith ram you have to go into the bios and use the xmp profile. if your using an ssd as the main drive check that you have the newest firmware..one of the errors sounds like a sleep issue with your system.