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10-05-2011 08:15 AM
I have been experiencing a few random restarts since upgrading my power supply and graphics card. I replaced the stock Radeon HD4350 with an XFX 1GB GDDR5 Radeon 5670 and as recommended I upgraded my PSU to a Corsair CX430 430w PSU. When looking in the event log, I see a fatal hardware error event pertaining to the AMD Northbridge citing it as event code 20 Watchdog Timeout. I have downloaded CPUID to monitor the temps and voltages and the temps all seem fine idling at around 40c and the video card idling at around 50c. The voltages are throwing me off because it says the VCore voltage is 2.14v which is very high according to what I have read around the web. Additionally, the PSU rails are all showing lower voltages than what is expected. the 12v rail shows 8.38v and the 5v shows in 3.8v. However, I have since played Mass Effect 2 pretty much maxed out for close to 3 hours without a hiccup and the computer has been on for the last 14 hours straight with no issues. I am assuming due to the stability the voltage reading have to be incorrect. From what I can remember the restart occured 3 times. Once after first boot with new PSU, once while runing AMD Auto-Tune, and once while attempting to view the Windows Event Log. Just FYI, I replaced the graphics card a few days prior to the PSU and everything was running fine, although I did not leave the CPU on too much for fear that the stock power supply would not handle the upgraded card. Also, I did not do a clean install of windows after replacing the hardware and I think that may be the next step I take if I receive another restart. Any suggestions? Thanks in advance.
10-21-2011 05:12 PM
The Corsair CX430 had enough wattage for your 5670 video card.
You need to stabilize your PC. Remove the AMD AUTO-Tune. Install the latest AMD Radeon video card driver.
The AMD Northbridge event code 20 Watchdog Timeout might mean that your motherboard is flakey.