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BLACK SCREEN WITH POWER TO LAPTOP

DELL M170 LAPTOP HAS A BLACK SCREEN WITH POWER TO THE SYSTEM. REPLACED VIDEO CARD, FAN AND CPU HEATSINK. CHANGED THE POER CORD. SCREEN GOES BLACK ON SYSTEM AND EXTERNAL MONITOR. THANKS!

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  • SOUPAFUN Aug 28, 2008

    THE COMPUTER BOOTS AND RUNS. IT STAYS POWERED ON BUT THE SCREEN GOES BLACK. I HAVE SWAPPED OUT THE MEMORY AND IT IS OK.IT HAS A NEW FAN AND IT WORKS.THANKS!

  • SOUPAFUN Aug 29, 2008

    The computer screen stays on for about 7 minutes. The computer boots and stays powered on until I power it off.Thanks!

  • SOUPAFUN Aug 31, 2008

    Actually the screen saver is set for 10 minutes. I have the same problem whether the screen saver is on or not. Moving the mouse does not change the black screen. Thanks.

  • mpittsinc Mar 04, 2009

    dell latitude d600 screen stays black when I turn computer on.

  • Ravel Lively
    Ravel Lively May 11, 2010

    Probably had a black screensaver

  • Roberta Smith
    Roberta Smith May 11, 2010

    does the screen go blank immediately after bootup to your operating system ?



    Robert

  • Jim Keysor May 11, 2010

    Does computer come on at all, does it boot up then goe blank? Sounds like possible ram problems, motherboard, or CPU. Does fan come on to cool machine?

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Heat the display chips for like a minute then couple your system and power it on

Posted on Dec 11, 2012

  • Rei Abba Raymond
    Rei Abba Raymond Dec 11, 2012

    Heat the display chips for like a minute then couple your system and power it on

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O n most dell laptops right at the base of the screen is a panel that pops off. If so there is a small card about 1-2inches wide ans 3-4 inches long. It is above the keyboard. this is an aux. power board and should have a connection on it to help power the screen. If this model dosent have this poard than the built in screen cooler is bad and you will have to replace the whole screen.

Posted on Sep 09, 2008

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3 Answers

BLACK SCREEN


have you applied the heat sink paste between the fan and the processor?

if not do that

Aug 28, 2008 | Intel Motherboard

1 Answer

I have ASrock P4vm800,Prescott800,Pentium 4 Pro.But i need a help.When it is powered up nothing happenes except the system unit ligth up,& chassis font panel ligth is blinking Continously.Cpu fan...


There is a verity of things you can check & or replace. You mentioned the CPU fan is not turning. This is very very important.
This suggests possible CPU fan is defective. Average life span for a CPU fan is 5 years or 50,000 hours. Your MB uses Intel PGA socket 478. For a replacement heatsink & fan assembly open the link provided;
http://www.amazon.com/Thermaltake-A4012-Cooler-Intel-Socket/dp/B000FEW8JW/ref=dp_cp_ob_e_title_0
A new heatsink assembly will come with a new fan attached to the heatsink.
It should also come with new thermal past or thermal tape attached to the bottom of the heatsink assembly.

As to the front panel LED light blinking continuously.
If the LED light is red in color this means your primary hard disk drive is trying to load windows.
My suggestion is for you to replace the CPU heatsink assembly first.
No need to remove the CPU from its socket at this time.
If you never replaced the Heatsink & fan assembly watch the video included below;

http://www.youtube.com/watch?v=4OB1hxxKdec
Once completed your system should function correctly.
If it doesn't, post you’re finding here & I'll help you further.

Cheers'
Mike


Aug 10, 2010 | Motherboards

1 Answer

CPU NOT DETECTING ERROR CODE FF


If you are having trouble booting the system and getting a screen try the following multi-step procedure. Power off your system first before completing any of the following tips.
1) Check CMOS clear jumper JP1 (JBAT1 on some systems). Set for CLEAR for 5 seconds, then move back.
2) Check CPU host clock jumpers (if any) are properly set. Note: does not control memory bus.
3) Check your power supply. Should be 110/115v for North America.
4) Unplug all data cables for IDE and FDD from the motherboard.
5) Unplug all power supply cables attaching to your IDE and FDD drives.
6) Remove all cards and devices EXCEPT for video, RAM, CPU, CPU heatsink/FAN.
7) Move memory into a different bank, if available.
8)Unplug the CPU and reattach.
9) Ensure your CPU heatsink/FAN is attached properly to the CPU.
10) If you use a variable RPM fan ensure its set for full speed.
11) Retest.
12) If 1-11 do not help power off and test the motherboard outside the computer case to eliminate a case/motherboard power short.
13) Retest. If the board now works check for case problems. If the system still is not working continue…
14) You may have a possible hardware problem. Any device in the system may be a possible culprit. Use process of elimination to determine the cause. Swap out as many components as possible starting with RAM, CPU, POWER SUPPLY, VIDEO CARD (if present) and/or MOTHERBOARD.

Jul 30, 2009 | Mercury P4VM800M7 Motherboard

1 Answer

POWER LED ON BOARD SHOWS THAT IT IS ON BUT SYSTEM DOES NOT BOOTS


Hi...

If that problem is happen check the monitor cable if it is correctly plug to the motherboard, if your motherboard have video card attach try to remove the video card, if the same things happen thee problem is the processor, you need to check the processor, remove it and clean then put a thermal paste so that the heat from processor will absorb by the heatsink, and be sure that the heatsink fan it working to prevent the heat.

Good luck !!!

Regards
PCmania

Jul 10, 2009 | Intel Desktop Board D815EEA2 Universal...

1 Answer

Motherboard powers up for 2 seconds then down on dell dimension 2350 fans start then immediately go down...pulled power supply and replaced but still same problem


if you have the knowhow, do the following

remove your CPU fan which comes with a heatsink,

then apply some heat sink compound paste on your heatsink where the heatsink makes contact with your CPU.
then connect your heatsink and fan, lock them into position and turn on your PC.

helpful? if not give me a reply to give you other ideas.

Mar 23, 2009 | Dell Motherboards

2 Answers

In my Dell Optiplex GX280, the processor fan was not start properly its run moderate speed for continuously but within 10 mins the pc shutdown automatically, after turn on the error show thermal heat...


Sounds like improper contact with the cpu and heatsink. If the fan runs...it runs and it'll do it's job but if the contact isn't proper, it'll overheat. These are older machines and the thermal paste that Dell uses turns to power after hundreds of power cycles. Buy some cheap silicon based thermal paste, clean off the cpu and heatsink with some 90% ir greater iso alcohol and apply a small rice grain sized drop of paste on the cpu. When you install the heatsink, give it a couple of twisted to spread the paste out.

Should be good to go.

Mar 13, 2009 | Dell Optiplex GX280 (99301) Motherboard

1 Answer

Hi - benimur


Pls check:
  • if CPU heatsink fan turning;
  • if heatsink is flat on CPU and tight;
  • if PSU exhaust fan turning;
  • if Video Card heatsink fan turning;
  • with a voltmeter, pls check consistency of the yellow and red wires (+12 and +5);
  • pls inspect capacitors near the CPU, none should be blistered, bulging are leaking;
  • remove the HDD connection and observe it will restart, if no, then probably a driver/software issue.

Aug 18, 2008 | Intel Motherboard

1 Answer

ASUS NCT-d


Hi, have you tried removing the CPU and using a Air Jet Spray can to clean all contact pins and pin holes? The problem sounds like a loose chip. So also check all on board chips are seated, including RAM chips. Air spray can be bought from most Computer stores. Goodluck mistyman

Sep 09, 2007 | ASUS NCT-D (90MSV430G0UAY) Motherboard

1 Answer

Your CPU may have a problem


Have you removed all memory, other cards and unhooked all other drives to see if a short exists there? With a 300W PS some other component may be pulling too much that the CPU can't start so it tells you the problem is with the CPU or The CPU its refering to is on the video card? Good Luck, Tim

Feb 10, 2007 | Albatron K8T800 (K8X800 PRO LL)...

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