iFixit - Answers With Device "Compaq Presario CQ40"

Compaq Presario CQ40: My laptop screen black but my power button still on

Fri, 07 Jun 2024 12:12:53 -0700

i want to ask how i want fix my laptop presario CQ41 because my laptop screen black but my power button still on...so how i want to fix?

⟐ Commented June 07, 2024 at 12:12 MST

Compaq Presario CQ40: Why is my battery not charging

Fri, 13 Dec 2024 07:47:47 -0700

How i fix my loptap that cannot charge in if even the charger are conected my laptop doesn't work but if the battery is have charge its working

⟐ Commented December 13, 2024 at 7:47 MST

Compaq Presario CQ40: The screen flickers and and works only at an acute angle.

Wed, 07 Feb 2018 21:32:09 -0700

The screen works only at a very acute angle, at 90 degrees or normal upright it's just black.

⟐ Answer accepted February 07, 2018 at 21:32 MST

Compaq Presario CQ40: Can I use ethyl alcohol?

Tue, 21 May 2019 16:48:47 -0700

can I use ethyl alcohol 70% to clean my device ?

⟐ Commented May 21, 2019 at 16:48 MST

Compaq Presario CQ40: How can I log into my computer or reset laptop?

Sat, 16 Feb 2019 05:57:11 -0700

On start up my laptop will not allow me to push keys in order to put my password in anyone know how i can fix this ?

⟐ Answer deleted February 16, 2019 at 5:57 MST

Compaq Presario CQ40: caps lock and scroll lock blinking

Thu, 16 Feb 2017 03:46:33 -0700

why my laotop blinking caps lock and scroll lock and not booting?

⟐ Answered February 16, 2017 at 3:46 MST

Compaq Presario CQ40: My cq40 does not recognize my hard drive

Sat, 01 Feb 2020 09:05:44 -0700

my cq 40 does not recognize my hard drive, it does not come up in the BIOS, what do i do

⟐ Answer accepted February 01, 2020 at 9:05 MST

Compaq Presario CQ40: Im still using windows 7 but now it does not get in to system

Wed, 05 Dec 2018 19:49:13 -0700

Coming on but fail to load in system

⟐ Answered December 05, 2018 at 19:49 MST

Compaq Presario CQ40: Power button is getting turn on and off after pressing it

Thu, 25 Aug 2022 08:18:04 -0700

Laptop is not getting started. Motherboard or CMOS checksum invalid showing sometimes

⟐ Commented August 25, 2022 at 8:18 MST

Compaq Presario CQ40: How to connect my laptop into the internet

Mon, 11 Sep 2017 04:41:06 -0700

My laptop can't connect to the internet.

⟐ Commented September 11, 2017 at 4:41 MST

Compaq Presario CQ40: compaq laptop not booting up...led lights blink

Tue, 27 Dec 2016 23:16:57 -0700

my laptop is not starting up.....i have a defective battery which is not charging at all. when i start the laptop screen remains blank and led caps lock and num lock lights blink and nothing appears......i have gone to a hardware shop who told me that my north chip is damaged...........is there anything i can do.......please help

Compaq Presario CQ40: first not detected hard disk then gone display now not power on

Sun, 06 Dec 2015 11:58:28 -0700

i used my laptop well for two days ago ,after two days it don't detect hard disk ,i replace new hard disk,then it don't show display ,after i power off it become dead why this happen suddenly ,i cant find out,please help me out

⟐ Edited December 06, 2015 at 11:58 MST

Compaq Presario CQ40: Why it turn off even though I already turn it on many times

Mon, 23 Feb 2026 17:26:59 -0700

i was trying to turn it on and leave it for awhile to let it charge but still the laptop didnt want to turn it on

⟐ Answered February 23, 2026 at 17:26 MST

Compaq Presario CQ40: If able to upgrade CPU

Sat, 01 Nov 2025 18:11:41 -0700

Hi, i recently found my old laptop and it have Intel Pentium and since i can access the motherboard i wonder if i can upgrade the CPU.

⟐ Commented November 01, 2025 at 18:11 MST

Compaq Presario CQ40: The system clock gets reset.

Sat, 29 Mar 2025 16:03:23 -0700

Whenever I shut down my laptop, the system clock gets reset. What could be the reason and please suggest the solution.

⟐ Commented March 29, 2025 at 16:03 MST

Compaq Presario CQ40: How can I clean cpu cooler system

Thu, 26 Dec 2024 17:38:59 -0700

The cpu getting hot and shut down

⟐ Answered December 26, 2024 at 17:38 MST

Compaq Presario CQ40: In my laptop, is not turning on? Or powering on

Sun, 15 Sep 2024 09:42:53 -0700

The laptop is pastly but from sometime it get that many time the light of power button get on. But now no response.

⟐ Answered September 15, 2024 at 9:42 MST

Compaq Presario CQ40: Unable to operate the hard disk

Tue, 22 Nov 2022 07:22:25 -0700

Well, my primary hard disk is failed and I cannot go into the software system. I want to take every memory from this device into another. Is it possible to run without the hard drive and take out my data?

⟐ Commented November 22, 2022 at 7:22 MST

Compaq Presario CQ40: How to buy a new display of this laptop

Thu, 22 Sep 2022 03:37:35 -0700

how to buy a new display

⟐ Answer edited September 22, 2022 at 3:37 MST

Compaq Presario CQ40: I want to ugrade my screen

Tue, 10 Mar 2020 14:21:52 -0700

i want to upgrade my screen model LTN141W1-L04(Samsung) 14.1”LCD (WXGA) 1280 x 800 30 pin to LED LCD LAYAR SCREEN LAPTOP 14" FHD (1920x1080) 30pin

can it work ?? how to do it ???

⟐ Answered March 10, 2020 at 14:21 MST