Laptop won't boot after fan cleaning/ thermal paste replacement

tylerbond42

Prominent
Sep 7, 2017
2
0
510
0
Hi everybody,

My 4-year-old HP envy laptop (dv6-7245) was frequently crashing due to overheating, so I decided to clean the fan and apply new thermal paste.

I fully disassembled the laptop to access the fan, from which I removed a thick layer of dust. Then I removed the old thermal paste from the CPU heat sink with alcohol and replaced it with new paste.
When reassembled, I connected to the ac adapter and tried to turn it on.

The laptop makes its usual startup noises (fan whirring, hard drive spinning) but the screen is black. Caps lock button is blinking continuously. Tried to reseat RAM and remove static electricity, and disassembled/reassembled 3x more to make sure everything is in its place. Also tried connecting to external display, and same result. Don't know what to do now-- this sounds like one for a tech expert. Any suggestions?

Thanks for helping,

-Tyler
 

Saga Lout

Olde English
Moderator
OK - silly suggestion time. Try pressing the Function key that controls the brightness. You may have accidentally turned it right down to total darkness. Here's where I have to admit to having done it myself.

Are you sure you applied new thermal paste to the CPU and not the GPU? Could the latter have been disconnected somehow.
 

tylerbond42

Prominent
Sep 7, 2017
2
0
510
0


Thanks for responding.
I did try connecting to an external monitor, but all it said was "no input detected". And I have looked at the ribbon cable-- it appears to be fine
 
Thread starter Similar threads Forum Replies Date
TechnicallyUnsavy Laptop Tech Support 1
bd01ng Laptop Tech Support 3
ototoxin Laptop Tech Support 2
yaezah Laptop Tech Support 1
--juliana-- Laptop Tech Support 8
B Laptop Tech Support 9
J Laptop Tech Support 9
F Laptop Tech Support 3
E Laptop Tech Support 1
C Laptop Tech Support 8
J Laptop Tech Support 3
M Laptop Tech Support 1
J Laptop Tech Support 3
T Laptop Tech Support 3
Q Laptop Tech Support 3
C Laptop Tech Support 16
A Laptop Tech Support 11
M Laptop Tech Support 8
G Laptop Tech Support 11
N Laptop Tech Support 7
Similar threads
Question Laptop trying to start but doesn't after disassembling and cleaning.
Question Wireless light on my Toshiba Satellite C55 laptop will not turn off after cleaning cpu fan
Solved! Did something to my laptop while trying to clean it, not sure what I just did...
Solved! MSI GS60 Laptop won't turn on after cleaning fans. Front LED lights up for 10 seconds then turns off. No sounds of fans or components.
Solved! laptop overheating even after cleaning and reapplying thermal paste
Is it ok to use crc to clean my laptop fans?
Laptop (dell XPS 9570) only boots after a break.
Solved! asus laptop blank screen after cleaning
My Fujitsu lifebook series laptop shuts down after all the cleaning and applying thermal compound. Please what could be the pr
Laptop makes a lawn mowing sound. Didn't make this sound before I cleaned out the fans and after I clean out the fans.
How to thoroughly clean a laptop after sugary spillage?
Laptop keyboard not working after cleaning (possible liquid damage)
Messed up when install new window on a laptop with intel optane
I opened my laptop to clean the fan, after assemble it back it won't turn on, however the power button is blinking.
HP Pavilion Black screen after laptop cleaning
Laptop fan sounds like drill after cleaning.
Opened laptop and the thermal paste is rock dry, should I leave it there or clean it until I can buy some?
Overheating Problem with Laptop, Even after opening up and cleaning
Fan on HP laptop spinning fast, even when clean and with new thermal paste
please i have disassembly my dv7 hp laptop and clean the heat sink but i dont have thermal paste to put on the cpu surface wha

ASK THE COMMUNITY