I have a customer with Server 2008 Std Domain (64Bit), 8 XP SP3 Workstations and 3 Win 7 X64 Workstations.
I rebuilt one Windows 7 x64 PC in April Last year and it has been Randomly BSOD'ing and hanging (About once a month initially), But Only at their premises on their domain. If I bring it back to my Office and log on with cached credentials (I have Server 2008 R2 STd and WORKGROUP Network) It performs flawlessly. I have had this Workstation here being torture tested since 22/12/2011 and it hasn't missed a beat. In Fact it never fails at my Office only at client.
Sometimes it simply hangs on the Ctrl-Alt-Del Screen and doesn't generate a Minidump. Sometimes it's while the User is working, sometimes it's during the night when the Machine is idling. It's about every 2 - 3 days. The Only thing I haven't tried is new Keyboard, mouse and monitor. I am going to take it back over the weekend and try checking the CAT5 Cabling to the Switch in the server Cabinet, is that likely?, it's about all I haven't tried.
Operating System MS Windows 7 64-bit SP1Professional (OEM)
CPU Intel Core 2 Quad Q8300 @ 2.50GHz 42 ฐC Yorkfield 45nm Technology
RAM 8.00 GB Dual-Channel DDR3 @ 533MHz (7-7-7-20) Transcend 2 x 4Gb
Motherboard Gigabyte Technology Co., Ltd. G41MT-S2P (Socket 775) 30 ฐC
Graphics Acer AL2017 (1400x1050@60Hz)
Intel(R) G41 Express Chipset
LogMeIn Mirror Driver
Hard Drives 488GB Seagate ST3500418AS ATA Device (SATA) 37 ฐC
78GB Seagate ST380013AS ATA Device (SATA) 36 ฐC
Optical Drives HL-DT-ST DVDRAM GH22NS40 ATA Device
Audio High Definition Audio Device
Avast Business Professional 6 (on all Machines with no problems)
I have tried the following:
Replaced Mainboard (under warranty Northbridge overheating)
Replaced Power supply (Under warranty Died - Gigabyte 470watt)
Updated Seagate Firmware on Boot drive (CC49 was CC46)
Memtest Overnight 20 Passes on both 4Gb Dimms separately Both passed 100%
Deep Surface Scans on both HDD's (with three different Apps from DOS environment and within Windows)
CPU Test (Prime 95) No Overheating 24 hours all 4 cores
Reloaded Virgin Windows 7 x64 - 4 or 5 times
Numerous different Malware/Anti-virus tests and clean every time.
I am running out of ideas, the user is back at Work Monday and I have promised it will work
PS. Cant attach Perfmon as it just runs and never stops?