Question about Dell Dimension 5150 (DIM515MIN) PC Desktop

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PC was rebooting itself. I tried vacuuming out dust from inside box. Now it won't boot up at all. Numbers on front panel 3 & 4 stay lit and monitor only shows scrambled colours PC is a DELL Dimension 5150

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  • Stu Morris K May 11, 2010

    sorry to hear your problem but using a hoover is not a good idea near a pc ,the hoover generates a static charge you could have blown something on the pc does your pc have a graphics card that you can remove from the motherboard

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Try manual cleaning the graphics card and the RAM by removing from the slot and rub the pins with pencil eraser as shown in the images.
PC was rebooting itself. I tried vacuuming out - cf512a3.jpg

8b47cc8.jpg
And re-attach them to the motherboard, also clean the graphics card's fan with small paint brush. Works for me, hope same goes with you.

Posted on Sep 24, 2009

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1 Answer

Error light code 3 & 4 in front panels


Hi Carlos, error code 3 & 4 is caused by faulty RAM (Memory modules) installed in the PC. You could try the following to resolve the issue:

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I was going to suggest that you have bad sectors on your hard drive that prevent you from booting, but since it won't boot from a CD either it sounds like you have a problem with your BIOS and possibly bad sectors on the HD as well. There's no simple way to fix this if that's the case, so it's best to be left up to a local pc repairman in your area...sorry

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the lights denote that is has encountered a system failure, very vague to be exact. try running the hard drive diagnostic if possible. it could also mean a hardware problem, worst case scenario would be a mobo failure..

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This might need to be reset.

Here' how...just follow the instructions..

moz-screenshot.pngThere's two ways to reset it

First: Soft Reset
1. Open front cover.
2. Hold down button located under LED's until all LED's are lit.
3. Release button and make sure drum LED is off, then
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Second: Factory Reset
1. Turn the printer off.
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3. Turn the printer back on.
4. When the DRUM light is lit by itself let go of the button.
5. Hold in the circular button on the front panel again.
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This will perform a factory reset on the printer.

I hope that's everything you want.
Please accept this answer if this will help you.
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Could be a couple of things.

Disconnect the C drive and see if the computer will stay turned on. If it does (you'll get an operating system not found error), then reconnect the c drive and see if you can get into the BIOS. If not, you'll need to replace the hard drive.

Could also be a faulty power supply. As soon as it tries to boot off the hard drive, it puts too much strain on the PS and causes a reboot.

Finally, if neither of those fix the issue, then the problem is motherboard and at that point it is more cost effective to replace the computer unless you can find a cheap, used motherboard. Good luck!

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The 2 and 4 LED error code indicatesVideo subsystem configuration or failure”. You either have a bad video circuit or your video drivers have a problem. Try booting into “safe mode” by tapping the F8 key when powering on the computer. If the computer comes up in safe mode then your video drivers may have to be reloaded.





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1 Answer

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I think that if you can boot up in safe mode you can slow things down enough to do something. If you can get there, you can stop the rebooting by going into "Control Panel", click on "System", click on the "Advanced" tab, click on the "Settings" box and uncheck the "Automatically Restart" box.
Then you can go in to "Add or remove programs". If you remove the AOL program, you'll probably be good!
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