How can I fix my laptop that turns on but shows nothing on the screen?

Hi @godric29085

Please confirm the model number of your laptop.

Water in contact with electronics is never good. You need to open the laptop and check if any damage has occurred.

It may not be evident straightaway, but unless you've been extremely lucky problems will start to occur in the days and weeks later.

The impurities in the water causes corrosion and provides circuit paths for the electricity which were not in the laptop's operating design and could damage the components. The corrosion starts immediately and is ongoing until it is completely cleaned away

Do not continue to charge or to turn on your laptop and remove the battery as soon as possible to minimize any further damage.

Then you need to dis-assemble the rest of the laptop and clean all the affected parts using Isopropyl Alcohol 99%+ (available at electronics parts stores) to remove all traces of corrosion. If possible do not use "rubbing alcohol" as in some cases this is only 70% IPA or less, can contain additives which may leave conductive residues and is not as effective. If you do have to use it check the label to verify the amount of IPA. The higher the percentage of IPA the better

Here is a link that describes the process. Electronics Water Damage

As always with electronics, especially surface mounted pcb be gentle when handling and especially when brushing away the corrosion. You do not want to remove any components from the board. Remove the shields that may be covering some components as the water may have got in under there. The ends of any flex cables and their connectors need to be cleaned as well

Hopefully after you have done all this it might possibly work correctly again. If not then the schematics and the service manual may be needed to try and fix any problems.

Sir I have same problem but your way was doesn't work.

Please sir give me another solution.

This is not answer...

I'm currently experiencing the same issue with my hp 8440p laptop I've been using windows 10 for about 5 months+ so I don't think that's the issue.

Mine started when it got soaked with water very little though, it was on sleep mode when it happened, I had to restart it to make sure everything was ok, everything was.

But the next day I boot my laptop everything seems normal but the screen won't boot, it continued for 3-4 days the screen came back on after that day I shut it down next day it the screen won't boot again.

I decided to give it time to get it $@$* together so after a week (cos I'm a med student not always at a point for long and I need that laptop so badly) the screen came on, that was yesterday but the keyboard isn't working, I restarted it the keyboard won't work I asked AI it gave me the same instructions (remove battery, press and hold power button...) It's still not working.

As I'm typing this right now the laptop is on but the screen is not and the caps lock light is blinking and I don't know what else to do. My next move is to go see someone that'll repair it but I don't have that kind of money or time rn.