White screen on laptop

[nanowatt]

So i got a customer's latop and i had to do the routine you know windows,cleaning,repairing....etc and it was working fine when i was done.I had to open it because inside it was coffee and fix the dvd writer because it was ofc full of coffee and would not open.Put the thing back together and it was working just fine i even tested the laptop with him to prove is fine.Now it calls me back and is telling me that sometimes it just stop or display a white screen.Maybe the baterry?Or a twisted cable inside?

[SovietOnion]

I had that issue with my Toshiba Satellite one time, cant remember what I did, I believe I was overheating/ undervolting my CPU. 

[nanowatt]

I had that issue with my Toshiba Satellite one time, cant remember what I did, I believe I was overheating/ undervolting my CPU. 

I just can't understand why, i did the windows,updates and programs it took about 3 hours to put all he wanted into it and it was working fine and now he is telling me the latop stop working or display a white screen once every 30-40 min....sound like crap

[Tsuki]

might be a loose connection to the screen. see if it works with an external monitor

[SovietOnion]

I just can't understand why, i did the windows,updates and programs it took about 3 hours to put all he wanted into it and it was working fine and now he is telling me the latop stop working or display a white screen once every 30-40 min....sound like crap

 

Was the coffee spilt on the keyboard? 

[nanowatt]

Was the coffee spilt on the keyboard? 

Yep got inside but lucky just into the hdd and dvd.The cpu and the mb was intact also the hdd because it was sealed.

[SovietOnion]

Maybe you didn't fully connect the the monitor wire, or it's loose, the reason the screen is white is because the LED backlights are on. 

[SovietOnion]

or it could be static electricity, tell him to remove his battery, hold the power button for 1 minutes, connect AC power and start laptop, run like this for a few hours

 

There is a virus that creates a white screen as well but it will usually give a notification such as "please connect to internet" or an attempt to make you pay to unlock your PC. 

[nanowatt]

or it could be static electricity, tell him to remove his battery, hold the power button for 1 minutes, connect AC power and start laptop, run like this for a few hours

Thanks for the help i will try some things tomorrow because i have to go and fix it.If is not going to work i will take the thing apart and figure it out.