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Can a three point power plug, replace the plug which came with the computer, which has had the earth pin removed. or must we remove the earth pin on a suitable, longer cord which came with the old printer?

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You should be able to use the 3 conductor plug with no problem. It actually would be better (safer) if you did use it. Someone may have removed the ground because they had old outlets with only 2 slots.

Posted on Dec 08, 2008

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The computer must have a three prong plug for safety of the equipment and yourself. Never remove the earh pin as you call it. There are adapters available at any hardware store if you only have two prong receptacles. Steve

Posted on Dec 08, 2008

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How do I remove administrator password on the BIOS of Optiplex 390


The CMOS contains the current BIOS settings
  1. Turn off the computer and disconnect the power cable from the electrical outlet.
  2. Remove the computer cover.
  3. Locate the 2-pin password connector (PSWD) on the system board.
  4. Remove the 2-pin jumper plug.
  5. Locate the 2-pin CMOS jumper (RTCRST) on the system board.
  6. Move the 2-pin jumper plug from the password jumper to pins into the CMOS jumper.
  7. Plug in AC power to the system and wait ten seconds for the CMOS to clear.
  8. Move the 2-pin jumper plug back to the password jumper.
  9. Replace the computer cover.
  10. Connect your computer and devices to electrical outlets, and turn them on.
Location of the RTCRST Jumper will vary by platform and form factor. For more information about the jumper locations refer to the system service manuals located at www.dell.com/support/manuals

Aug 15, 2016 | Dell OptiPlex 390 DT Desktop Computer...

1 Answer

System battery is low


Dear Anonymous,
BEST PRACTICE: Buy an anti-static wristband before going "under-the-bonnet! Many people will advise that it is ok to delve around the insides of a computer without one, but that can be an expensive mistake...when they only cost a couple of bucks & can save you the trouble & expense of zapping ex$pensive hardware. Your computer box contains extremely sensitive chips & the human body can store up to 50,000 volts of static electricity...
TURN POWER OFF AT WALL SOCKET! [But leave plug in wall socket - this will extend power-system earth to the box.] Then press & hold power-on button on front of box case. (This will "earth" the system.)
Open computer box: Most Dell tower/mini tower boxes have a slider on the back panel: hold slider open & slide side of case backwards.
Find a non-painted - (bare) - metal connection point for wristband alligator clip inside box. Attach clip. {N.B.: if you do this procedure WITHOUT an anti-static wristband, be sure that you "earth" your body, by holding on to the bare metal connection point for a few seconds!} Locate the cmos - (or "BIOS") - battery. It will be a button-shaped battery. Check "Polarity" - (which way up) - of old battery. 'Eject old battery from holder. Check battery TYPE - (make sure that new battery is identical/equivalent. Push new battery into holder. Remove wrist clip. Replace side-cover. Power on. Reboot computer. N.B.: If asked during bootup - restore BIOS settings to "default". That's it! I hope that this solves your problem. Kind regards - 'b'ye - Bruce.

Jul 31, 2014 | Dell OptiPlex PC Desktops

1 Answer

How do you change the bios battery on my dell workstation 670


Dear Anonymous,
BEST PRACTICE: Buy an anti-static wristband before going "under-the-bonnet! Many people will advise that it is ok to delve around the insides of a computer without one, but that can be an expensive mistake...when they only cost a couple of bucks & can save you the trouble & expense of zapping ex$pensive hardware. Your computer box contains extremely sensitive chips & the human body can store up to 50,000 volts of static electricity...
TURN POWER OFF AT WALL SOCKET! [But leave plug in wall socket - this will extend power-system earth to the box.] Then press & hold power-on button on front of box case. (This will "earth" the system.)
Open computer box: Most Dell tower/mini tower boxes have a slider on the back panel: hold slider open & slide side of case backwards.
Find a non-painted - (bare) - metal connection point for wristband alligator clip inside box. Attach clip. {N.B.: if you do this procedure WITHOUT an anti-static wristband, be sure that you "earth" your body, by holding on to the bare metal connection point for a few seconds!} Locate the cmos - (or "BIOS") - battery. It will be a button-shaped battery. Check "Polarity" - (which way up) - of old battery. 'Eject old battery from holder. Check battery TYPE - (make sure that new battery is identical/equivalent. Push new battery into holder. Remove wrist clip. Replace side-cover. Power on. Reboot computer. N.B.: If asked during bootup - restore BIOS settings to "default". That's it! I hope that this solves your problem. Kind regards - 'b'ye - Bruce.

Jul 31, 2014 | Dell Precision Workstation 670 PC Desktop

1 Answer

Need to reset tp factor settings for my acer pc


remove the power from CPU then remove the side covers in the motherboard near the c mos battery you will see a three pin jumper with 2 pin shorted remove them and insert the jumper to the 2 and 3 pin then switch on the computer in some case the computer doesn't work switch off and remove the power and replace the jumper to early position and connect the power and restart the computer this will reset the system to default

Oct 27, 2011 | Acer PC Desktops

2 Answers

How do i reset the pc to original settings


remove the power from CPU then remove the side covers in the motherboard near the c mos battery you will see a three pin jumper with 2 pin shorted remove them and insert the jumper to the 2 and 3 pin then switch on the computer in some case the computer doesn't work switch off and remove the power and replace the jumper to early position and connect the power and restart the computer this will reset the system to default

Oct 27, 2011 | PC Desktops

1 Answer

How would you fix an onboard video card


Basically there are 3 possibilities for on board video card failure
1.Hardware,
2.Software and
3.BIOS control

To fix the problem please follow the below steps
1.First of all unplug the power cord to avoid any shocks
2.First reset C MOS , to reset C MOS. Remove the case side panel and using the instructions provided in the motherboard manual, locate the three jumpers used to clear C MOS. Your motherboard will have a jumper shorting two pins usually labeled normal operation. Remove jumper shorting pins one and two, and replace that same jumper on pins two and three

4.Then plug the power and

Your system will not power up. Remove the Clear C MOS jumper from pins two and three, and replace it on pins one and two. Power up System. The system will require you to enter setup and correct the default settings. If clearing C MOS had no effect, you will not see anything on your screen when you power is back up.

If the above did not work then proceed further,


Enter setup, fix the date and time, and you should be in good shape, as most newer computer systems will automatically detect the rest of your setting.
While software driver errors can be fixed, this is something that can only be dealt with if you have some form of video function. If the screen is black, try clearing C MOS, as described above, and otherwise proceed to the next step.

Now the last step is to replace the video card.

Thanks.
Have great day.

Sep 07, 2010 | Acer Aspire™ T180 PC Desktop

1 Answer

While cleaning I took the processor out and now my Dell XPS 410 wont start.


I do not understand what do you want to find under the processor??? Leprechauns???

If you desperately want to clean your computer, never ever use vacuum cleaner, if you want to clean heatsink and fan, exactly remove only and only fan, brush and blow heatsink if you must.

Now, again, as you did put already your computer to pieces:

1. switch off computer, remove power cord from teh socket
2. remove again the wall,
3. remove heatsink and fan, check if processor is correctly installed, replace heatsink and fan,
4. remove and re-insert memory sticks, thes have tendency to burn or get moved during cleaning, check if memory is correctly inserted
5. check power connectors on the motherboard, 24pin as well as 4 pin
6. check power supply itself

If computer after tha procedure still do not start, tehre question arises:
1. did you used vacuum cleaner to clean?
2. did you use static strap...

If your answer is yes/no you fried your processor, memory or motherboard... or all three, check then all three components against known working computer and then replace bit which you fried...

Aug 23, 2010 | Dell XPS 410 PC Desktop

1 Answer

How do I replace a power supply on a Compaq Presario SR5110NX Desktop PC


you can purchase a power supply from any computer store *********** board supports both standard IDE and Serial ATA connections, so you want a power supply that does SATA power as well. Unplug the power cord from the back of the computer. remove the cover from the case and verify that there is no green LED on the board that is lit up (if there is, there is still power on the board). unplug all connections from the current power supply, including all drive power and the large 24pin plug (actually a 4 pin plug that is combined with a 20 pin plug) on the board, then unplug the 4 pin plug near the processor. careful that the 24 pin plug and the additional 4 pin plug near the processor have latches on the side. Remove the 4 screws that hold the power supply in and remove the power supply, install new supply and reinstall the 4 screws. first plug in the 4 pin plug that connects with the 20 pin, the 4 pin plug has no latch, it is held in place by the 20 pin plug. then plug in the 20 pin plug and the 4 pin next to the processor. then plug in the drive power to all of the drives. Install the power plug at the back of the system and you should see a green LED on the board when you insert the power. replace the cover and power the system up.

Apr 03, 2010 | Compaq Hewlett Packard Presario SR5110NX ...

1 Answer

Green light next to power button stays on - no response from computer, totally frozen for up to 12 hrs, then green light goes off, computer suddenly comes on for 5-10 min then freezes again.


Good day sir, hi, You need a thorough check on your PC.
But first try testing the Motherboard, Processor and Memory module.

As this point you need a friend, that knows how to tinker with your PC

Or you may need to do this.

1. memory testing:
Try replacing a new memory ram module on your PC, get the modules out of the memory slot, and let it be tested on another PC. if good,

2. power supply
Test for the power supply box, remove the 20/24 pin power connector from the mainboard and short the green and any black wire, your fan should blow out air.

3. Test for motherboard.
remove all coonections from the motherboard, except the 20/24 pin power connector, and the 12v 4-pin molex power connector, connect the pc speaker or the thumb speaker on the speaker port, connect a keyboard, clear the CMOS, (or remove the battery temporarily), connect the header panel (power switch, reset, power led) place the processor and memory (the tested good one). power on.


You should hear a beep (good) The keyboard will light up the three leds, then a few seconds, the numlock led.

If you hear 1 long and 2 or 3 short beeps, problem with the display section. Reseat any graphics card. test again.

If you hear continous beeps, reseat the memory, if the beeping persist, replace your motherboard.

If you hear nothing? only fan blowing, replace your motherboard.

I can only give you instructions, you need a someone who knows how to service a PC.

Dec 17, 2009 | Compaq Presario 5000 PC Desktop

1 Answer

Replacing power supply on a gateway desktop 600xl


to replace a standard ATX powersupply;

remove left hand side cover (ensure power is disconnected first);
disconnect the 20.24 pin primary power plug (big wide white one plugs directly onto the mainboard, also disconnect the 4 pin AUX power plug, looks just like the other one but is a smaller square shaped plug (older P3 boards will not have this)

disconnect all 4 pin power plugs from hard drives/cd drives and aftermarket fans (if any are installed), disconnect SATA power plugs from any SATA devices installed (flat black plug, 4 wires)

disconnect floppy drive power plug (if app) small while 4 pin power plug, once all of these are disconnected, looking at the rear of the computer there will be 4 screws holding the power supply in place, one screw will be more to the centre slightly to ensure you do not put it in upside down, once you remove those screws the power supply will slide right out.. simply re-do these steps in revers for instaling the new power supply


David


Feb 28, 2008 | PC Desktops

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