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How can i rebot my compaq presario CQ57 with a black screen

My Compaq Presario laptop cq57 has a totally black screen. I have done a hard reboot that did not work .when I start the pc the power light goes on but the cap lock light does not. there are no beeping noises. I have connected it up to a monitor by a VGA cord but the screen does not appear on the secondary monitor. this problem began when I was using a secondary monitor for a larger screen. the image began to roll and I had several bars of the same image. every thing appeared to be a pink color.i did change a monitor setting in the pc. it was a projector setting.

Posted by Anonymous on

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  • Compaq Master
  • 1,039 Answers

With the huge battery removed? why not do that FIRST FIRST?
100% black all the time,, not even text here, ever.
not even using a flash light? pointed at the screen,?
but now all screens are dead.

ive no idea at all what is plugged in here, its all over the map.
Laptop screen
VGA screen (has hot key , if not used the port is dead, RTM?)
projector.? huh? (yes, ive used them for years)

did you read the users guide yet, if not why?
you posted anon, 2 times. now? why?

so the PC is bad. (check)
so you are asking how to diagnose a PC with no tools ?
well if you make a BOOT CD, for 10cents and boot to linux live CD
if the screen is dead the the PC is dead. end story

  1. remove main Battery, bingo.
  2. replace power pack, it costs $15, we use a voltmeter you dont have.
  3. The PC is overheated fans dead or packed in lint, as all are this old, ALL ARE. or the heat sink is failing, only a tech can fix this.
  4. Its old, it will fail as all old PC's do, BAD memory, try 1 stick at a time.? finding new sticks are ******* old PC , super hard.
  5. BAD CMOS coin cell causing RTC to go nuts BIOS settings same. replace the coin now. but usually it never kills the screen, but never seen a good coin this old so.... there you go...
  6. BAD mobo. The MOBO has lots of chips, cpu, GPU, Glue logic and regulators.
For sure the GPU chip is upset, why we dont know. takes lost of testing and lacking spare parts is many times impossible to cure.

Posted on Jun 28, 2017

4 Suggested Answers

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Posted on Jan 02, 2017

puertobori
  • 7733 Answers

SOURCE: Compaq presario CQ57 screen is black even when the

You need to test your video card.

Posted on Sep 30, 2011

  • 6771 Answers

SOURCE: compaq Presario CQ57 has red screen with compaq logo on start up and wont go past that screen even when pressing f-buttons

The hard drive has issues or the windows files have been corrupted, remove the hardware and reseat it back in place sometimes this will activate the system, next! use your backup recovery disc if you have one, no change! the hard drive will need to be tested.

Posted on Jun 25, 2012

arjun_aka_ba
  • 6 Answers

SOURCE: Manual for the Compaq presario CQ57-339W/M Notebook PC

Download your manuals here....
http://h10025.www1.hp.com/ewfrf/wc/manualCategory?cc=us&lc=en&dlc=en&document=&product=5173039

Posted on Nov 02, 2012

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don't trouble yourself
try this password if you are using compaq
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Compaq Presario CQ57-229WM Hard Drive Replacemnet Instructions


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How to replace cq57-229wm screen


HI,
On amazon you can purchase display for affordable price
Amazon com cq57 229wm screen. Take a look, but be awero... read reviews first.
regards
Mark

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Compact presario cq57-229 recovery software


You can get a recovery CD from the Compaq/HP WEB site for your model computer.
www.compaq.com/country/cpq_support.html

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