When i power on my dell optiplex 270 the orange light starts blinking and no display CPU fan not working power supply fan not working too.motherboard yellow light is on.
Sounds like power supply failure. You can try removing all of the ram and pressing the power button again. If nothing happens, its either a bad power supply or a bad motherboard.
Love the A+ guy above. Trying to scare you into not doing it yourself, Fixya is probably not the right place for him to be posting.
I digress. This 270 is an interesting case. You had a failed chip you changed out and it boots but it takes forever to load windows. Ceck the motherboard for leaking and buldging caps. If you don't see any, change the ram out and boot your cd's again, I also recommend knoppix, A full boot of linux on a CD. It lets you boot and test many different things. If your ram is faulty it would cause a boot problem like the one you mentionend. you never mentioned switching the sticks around like I had suggested, if you haven't tried that, try it now. If there is a failling stick it should show up.
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You need to have the Power Supply replaced on your Dell. Don't even think about repairing a power supply it caries dangerous voltages and you can get seriously injured. So just take the Dell to a Certified A + Technician Shop near where you live Local shops will often work with you if you do upgrades and repairs with them Good Luck! If you fel you can do this repair be sure to ground yourself so you dont short out your Motherboard components. and remove tyehb screws from the power supply and detach the power cables from the motherboard and hard drive and other drives optical drives CDRWs then replace and reconnect the new power supply dont buy the cheapest one getb a power supply rated higher than yoiur current one so that when you upgrade the system there is enough power there to run all the drives and devices. Good Luck Write me if you have questions I am a A+ Certified Technician with 14 years experience and I have a part time Computer Business. I had a Retail Computer Store and Repair business for over 8 years in St Petersburg ,Fl I do part-time repairs and upgrades now as well as new custom builds by request.
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Agree that it is a bad power supply. One thing I wanted to point about about your Dell Optiplex GX270. For a time period Dell was a Proprietary computer manufacturer. This means Dell wanted THEIR parts used, and only THEIR parts, in THEIR computers. Dell had the main ATX power cable connection, changed around on their motherboards. They also had the main power cable changed on the matching Power Supply. To explain: Dell Support>Main support page for the Optiplex GX270 series of desktop computers>Motherboard,http://support.dell.com/support/edocs/sy... Dell used a 20-pin ATX main power cable connector, on the GX270 motherboard. Shown as Number 18 in the motherboard illustration. The connector has 20 socket holes. Each socket hole has a power wire going to it. There are three main voltages produced by a computer power supply. Orange insulated wires are 3.3 Volts. Red wires are 5 Volts. Yellow wires are 12 Volts. ANY Black wire is a Ground wire. There is a Standard, as to what socket hole those individual power wires go to. Dell changed the pattern around, and it no longer fits the normal standard used. Guess what happens if you plug a wire carrying 12 Volts to a ground connection? POOF! Power Supply burns up, Motherboard, Processor, Ram Memory, and graphics card, if used, may also. Check the new power supply's 20-pin ATX main power cable connector, against the Dell 20-pin ATX main power cable connector. Make sure the color code of the wires are in the same place on the new power supply, as the Dell power supply. This is the standard color code, of a 20-pin ATX main power cable connector,http://www.playtool.com/pages/psuconnect...
I took of the memory cards, and turn try to turn the power on again. This time the orange light on the power button stays lit, the power supply fan turns on, and the processor fan turns on too. And something was making a humming noise. Please help
I replaced the processor which was 2.8 with 2.4 and cleared the CMOS and after starting both the fan were working (supply and CPU).then i formatted the hard drive and installed windows xp pro but it took 10 hours to complete the installation and after that it never showed me the initial start up page.i tried with hirens bootable cd and tried with mini xp but that also is not being shown.there is a slight movement of flashes on the monitor screen for just a few seconds and then keyboard lights go off no button is working i am quite annoyed by this situation.what could be the problem? thanks
The Power On button has dual colors. Green, and Yellow. When it is Blinking Yellow, this is an indication of either Power Supply failure, or System Board failure. I believe it is the Power Supply. But there are some questions I need to ask first. 1) You replaced the 2.8GHz with a 2.4GHz processor. Why? And, is the Processor Known to be good? What Processor is it? Do you have the sSpec number? 2) Did you follow anti-static precautions when installing the Processor? What procedure did you follow? 3) What procedure did you use to clear CMOS? 4) 10 hours to try to install Windows XP Pro? After the first hour did you suppose something was wrong? Average time for install is 45 minutes. 5) Formatted the harddrive and installed Windows XP Pro. What do you mean by formatted the harddrive? 6) Do you have a multimeter to test the Power Supply with, or a KNOWN to be good, compatible Power Supply, to use as a test unit? (An economical, but decent multimeter, can be purchased for around $10 to $12. Auto parts stores are but one place that carry them)
thanks for the reply .i did all steps right but my problem is solved by throwing this machine in garbage box.
thanks for all the help
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