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We noticed a similar trend with a large batch of GX260's and similar failures with the MBs in GX270's also. -- ________________________________________________ Stephen Bogdanski Network Support, MSU-CVM Michigan State University [log in to unmask] A227 VetMed Center Phone: (517) 353-5551 East Lansing, MI 48824 Fax: (517) 432-2937 >>> On 9/14/2006 at 3:11 PM, <[log in to unmask]> wrote: > 3 years (and two weeks) ago we made a bulk buy of 90+ Dell OptiPlex > GX-270 systems to replace older desktop machines for our users. > > Overall we have been satisfied with these systems. But during the last > 7 months or so, we have had to replace the motherboards in 17 of these > systems. > > The typical symptom that results in us having to request a replacement > MB has been that the video signal from the built in video card would > spontaneously go dead in the middle of using the machine. No > predictable pattern to when. Power cycling the machine brings the video > back 99% of the time. But once it starts to happen on a given machine, > it continues and increase in frequency. > > The first couple of times we suspected driver incompatibility, power > supplies, etc. But in the end, replacing the motherboard (transferring > over the processor and memory from the existing MB) has been the > permanent fix. > > I am wondering if anyone else purchased some of these GX-270 systems > and has experienced the same or similar issue. Feel free to respond to > me off list as I am not trying to bash the manufacturer, just figure out > if it might be a manufacturer defect. A 20% plus MB replacement rate > seems out of the norm in my thinking. > > These machines are out of warranty as of two weeks ago, and we now have > two more systems that are yet again experiencing this problem. > > Thanks for your time! > > - Al > > > >