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PRESARIO CQ57-356EA SCREEN IS BLANK BUT IS POWERING UP

Shut laptop down as normal but when i switched it on the nexct day it powered up but i have no screen. the caps lock key has a continuos flashing blue light on that wasnt there before

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  • Compaq Master
  • 32,281 Answers

If your laptop appears to boot up and the hard disk LEDflashes, then the problem is probably a back light fault. This can be a faultyinverter or a faulty CCFL lamp. Please click on this link and follow myinstructions to identify the fault and possible fix :- http://www.fixya.com/support/r3598095-faulty_laptop_lcd_screen

Posted on Feb 09, 2012

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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: good day.. my compaq presario cq40..is

Hello good day,sir
My compaq presario cq40..is powering on but blank on the screen and caps lock and num lock blingking only.I try ready so many time but everything are not meaning for me that's why i need your help,sir.please,give me some advice for power back.
Thank sir.

Posted on Mar 06, 2011

jyackle5
  • 8197 Answers

SOURCE: i bought a presario cq57-229wm. didn't have a user

You can get the manual on the link below.
http://h10025.www1.hp.com/ewfrf/wc/manualCategory?cc=us&lc=en&dlc=en&document=&product=5111894

Posted on Sep 02, 2011

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Just got cq56-115dx laptop this morning. turned it off after setting it up. Turned it back on and only have blank screen. Power shows lit up.


Hi.

Remove the AC power (charger) and then take the battery out. Plug in just the AC power supply and turn the laptop on, see if it boots up and shows a display on-screen. If it boots let it boot up and then shut it down as normal. Reinsert the battery and try as normal.
If you still get a blank screen can you then tell me if you get any post (splash) information like the Compaq Presario logo before it goes blank.


Good luck.

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Hello good day,sir My compaq presario cq40..is powering on but blank on the screen and caps lock and num lock blingking only.I try ready so many time but everything are not meaning for me that's why i need...


Hi

You could try this

switch on power and press either the f5 or f8 key
if this works try to go down to use the last good known configuration
itf that dont fix it

try again to power up and press either the f5 or f8 key
and try to repair


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Good day.. my compaq presario cq40..is powering on but blank on the screen and caps lock and num lock blingking only..thanks


Hello good day,sir
My compaq presario cq40..is powering on but blank on the screen and caps lock and num lock blingking only.I try ready so many time but everything are not meaning for me that's why i need your help,sir.please,give me some advice for power back.
Thank sir.

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