09-08-2011 01:39 PM
I own a thinkcentre m55 8810-fbu with Pentium D-3.0 Ghz, SATA HD, with Windows XP Pro SP3 installed. This is a small form factor desktop. My problem is that the machine destabilizes after about an hour. I notice lots of wavy line activity on the monitor, the fan revs up some and then it disconnects itself from the internet. After that I have about 20 secs before it freezes. I have to power down with the power button to get out of it. It will boot up again and is operable again for a limited time. When I open the cover, I notice the CPU to be very hot (almost too hot to touch) and the hard drive hotter than I would like to see it. This unit only has one vent fan.
I have reloaded windows which got rid of the blue screen and memory dumps but I have no confidence it won't keep happening. I have flashed the BIOS with the latest revision available (2jjy49usa - 12-12-2008). I have reconnected the SATA drive and memory modules. I don't know that it helped any. What should I be looking at to rectify this problem?
09-09-2011 03:35 AM
Please veryfy, that the CPU-fan is running after turning the ThinkCentre on. If not, the fan must be replaced.
You also should take a look whether the ribs of the fansink are free of dust. The ThinkCentre works like a vaccum-cleaner and the dust locks the ribs ather a few months of use.
You can clean the fansink with compressed air after plug off the fan-power-cable from the board. After that job re-attach the fan-power-cable and test the temperature again.
09-09-2011 12:32 PM
The fan works and the heat sink ribs are clean. I am going through a hard drive rebuild because the company I bought the computer from shipped me a new drive because at one point I was getting delayed write errors. I will see how this goes.
09-11-2011 07:14 PM
I am going to replace the fan as a matter of course to eliminate the possibility that the one in the machine now is on its last legs. It it does not help, I will have a spare.