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Dell gx270 mother board power supply proseccer fan automatic running but power switch is not work how i find plz help me


Answers :

For non-BIOS issues:
\015\012
\015\012If you did not try to update BIOS before the problem started then try these troubleshooting steps.
\015\012
\015\0121. Full power down. Unplug the power cord from the Power supply. Then hold down\015\012the pc power button (this discharges any residual power in the capacitors).
\015\012
\015\0122. Open the case and reseat the graphics card, hard\015\012drive, and RAM.
\015\012
\015\0123. Take out one of the RAM sticks if there is 2 or more. Swap the RAM sticks in\015\012different RAM slots. Try one stick at a time to see if you can get the PC\015\012to boot. If this works, then the remaining ram sticks are damaged.
\015\012
\015\0124. Set the Cmos jumper to clear. Power up the pc. Power down the PC. Set the\015\012Cmos jumper back to normal position, power up the PC.
\015\012
\015\0125. Unplug and replug all the power supply cables.
\015\012
\015\0126. Check the powersupply function. Either by a powersupply voltage checker\015\012(20-25 dollars at local PC shop), get the supply tested at a PC shop (usually a\015\012free service), put the powersupply in a different pc, or try a different\015\012powersupply in the problem computer.
\015\012
\015\012If the Powersupply checks out ok, then you will have to do a process of\015\012elimination to find out what part or parts are the culprit of the No-Boot.
\015\012
\015\012Start by pulling all the ram sticks if you have not already. This is the\015\012easiest components to check and usually a culprit.
\015\012
\015\012Take out one of the RAM sticks if there is 2 or more. Swap the RAM sticks in\015\012different RAM slots. Try one stick at a time to see if you can get the PC\015\012to boot. If this works, then the remaining ram sticks are damaged.
\015\012
\015\012If it is not the RAM, you have to continue removing items such as sound cards,\015\012un-plugging hard drives and optical drives, other PCI cards. Do this one\015\012at a time until you find the culprit. If a POST screen, meaning you can\015\012see Anything from the PC brand name to Motherboard brand name appearing on the\015\012screen. The PC may not boot to windows, but it Does post at this point,\015\012and with that the problem is resolved. If windows does not load, then you\015\012have a new problem. Best dealt with asking a new question.
\015\012
\015\012Good luck!
\015\012Brian
Repair Help & Product Troubleshooting for Dell PC Desktops

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