Laptop does not turn on - GSM-Forum

tajar · 03-29-2017, 20:22

I have a laptop compaq cq71 which have the bellow problem

The laptop does not turn on, when i insert the dc jack its light turn on and after 30 sec it turn off,
After that the board seems dead, nother of leds is on

Can anybody give me any advice what part of board should i measure.
Can it be any foult of southbridge or northbridge?

Can it be any mofset problem.

Nishith · 03-30-2017, 14:12

1. Make sure your Charger / Battery isn't faulty.

2. Check the connection between Power Button and Motherboard.

3. Check Power Distribution on whole MB.

Daniel Razon · 04-06-2017, 15:51

Have you check the battery or if you need to charge it already?

Samtron123 · 04-27-2017, 10:31

It can also be graphics card

farooquepm · 05-22-2017, 19:10

Brother check 5 voltage and 3 voltage on primary section

jawi · 05-22-2017, 19:30

buy new one my frd it looks like ur laptop is to old..this is the time to buy new laptop

cyusax · 06-22-2017, 18:15

The graphics chip could be damaged

AlexHack · 08-24-2017, 18:33

Check BGA chip of VGA card? Rehot or Reflow chip.

Facile · 12-20-2018, 15:30

Heat the graphic chip or chipset ...
If it helps, do reball this chip ;-)

03-29-2017, 20:22	#1 (permalink)
tajar Junior Member Join Date: Mar 2017 Posts: 6 Member: 2697002 Status: Offline Sonork: THANASI Thanks Meter: 0	Laptop does not turn on I have a laptop compaq cq71 which have the bellow problem The laptop does not turn on, when i insert the dc jack its light turn on and after 30 sec it turn off, After that the board seems dead, nother of leds is on Can anybody give me any advice what part of board should i measure. Can it be any foult of southbridge or northbridge? Can it be any mofset problem.

03-30-2017, 14:12	#2 (permalink)
Nishith No Life Poster Join Date: May 2012 Location: BHARAT Posts: 1,571 Member: 1766148 Status: Offline Sonork: 100.1614494 Thanks Meter: 490	1. Make sure your Charger / Battery isn't faulty. 2. Check the connection between Power Button and Motherboard. 3. Check Power Distribution on whole MB.

04-06-2017, 15:51	#3 (permalink)
Daniel Razon Junior Member Join Date: Apr 2017 Location: Philippines Posts: 3 Member: 2703844 Status: Offline Thanks Meter: 0	Have you check the battery or if you need to charge it already?

04-27-2017, 10:31	#4 (permalink)
Samtron123 Junior Member Join Date: Apr 2017 Posts: 19 Member: 2708027 Status: Offline Thanks Meter: 1	It can also be graphics card

05-22-2017, 19:10	#5 (permalink)
farooquepm No Life Poster Join Date: Jul 2015 Location: searching Age: 31 Posts: 742 Member: 2424314 Status: Offline Thanks Meter: 731	Brother check 5 voltage and 3 voltage on primary section

05-22-2017, 19:30	#6 (permalink)
jawi No Life Poster Join Date: Mar 2008 Location: Kanada Posts: 2,202 Member: 737720 Status: Offline Thanks Meter: 1,421	buy new one my frd it looks like ur laptop is to old..this is the time to buy new laptop

06-22-2017, 18:15	#7 (permalink)
cyusax Junior Member Join Date: Apr 2005 Posts: 5 Member: 139412 Status: Offline Thanks Meter: 0	The graphics chip could be damaged

08-24-2017, 18:33	#8 (permalink)
AlexHack Junior Member Join Date: Dec 2004 Location: Serbia Age: 35 Posts: 12 Member: 102194 Status: Offline Thanks Meter: 0	Check BGA chip of VGA card? Rehot or Reflow chip.

12-20-2018, 15:30	#9 (permalink)
Facile Junior Member Join Date: Dec 2014 Posts: 21 Member: 2318968 Status: Offline Thanks Meter: 8	Heat the graphic chip or chipset ... If it helps, do reball this chip ;-)