[SOLVED] Urgent!! Illuminated blank screen on boot! No POST No BEEPS

[Rigboat27]

Hello everyone!
My lenovo laptop had a windows 10 installed which was acting weird
(Couldnt use the OS, couldnt revert back etc)
To solve this i removed the hdd, disassembled an ext hdd and used the usb extension with the lenovo hdd to backup all my data on another laptop with acronis
Later i created a partition on the clean drive and flashed an img of windows 10 to fresh install it
But the lenovo laptop doesnt even POST now. There is an illuminated blank screen as soon as it is turned on irrespective of whether or not the hard is installed on the laptop
Also the laptops bios is corrupted and cant be changed
Same goes with the boot menu
Any suggestions?

 

[Rigboat27]

"But i need the heatsink"

Heatsink transfers heat from processor die, you dont need to replace anything. Just remove all dust from fan , heatsink and around the case. Then Remove the old thermal paste from heatsink contact and processor die with isoprophyl alcohol and q-tips for example, when its super clean and dry add new thermal paste and tighten the heatsink back in.

sry i meant thermal paste

 

[lga1156_ftw]

However this might not solve the issue, you need to still do it since the fan is clogged up. After removing the heatsink you can try reseating the cpu with integrated graphics chip , look video at 05.00min, first turn the screw then unlock the cpu, you can use compressed air into the cpu socket holes and cpu pins, then put it back and tighten the screw, worth a try. After that and cleaning all the thermal paste and adding new put everything together.

 

[Rigboat27]

But how can

However this might not solve the issue, you need to still do it since the fan is clogged up. After removing the heatsink you can try reseating the cpu with integrated graphics chip , look video at 05.00min, first turn the screw then unlock the cpu, you can use compressed air into the cpu socket holes and cpu pins, then put it back and tighten the screw, worth a try. After that and cleaning all the thermal paste and adding new put everything together.

Stripprd screw though

 

[Rigboat27]

I was wrong
I realised that fn f2 is actually for the bios menu
Instead of the menu i get a black screen but i thought it was the hdmi

 

[lga1156_ftw]

Try the Novo buttion when laptop is powered off, press it when power is off completely.

 

[Rigboat27]

Nah it doesnt work
Also i have this question that keeps bugging me
What is the probability taht the mb itself has failed

 

[Rigboat27]

Or whether something has happened related to the mb itself and not related other components, dust, heatsink etc

 

[lga1156_ftw]

Lets say its about 50% its the motherboard and 50% its something else, i would take those chances

 

[lga1156_ftw]

After you have diagnosed the problem for laptop for the first time makes it very easy next time with another laptop in the future, we are covering so many possibilities here.

 

[Rigboat27]

After you have diagnosed the problem for laptop for the first time makes it very easy next time with another laptop in the future, we are covering so many possibilities here.

Ok thanks for the suggestion

 

[Rigboat27]

Can you please make me a list of the all the things i need to check in an increasingly difficult and complicated order in the form of a list
That would be extremely helpful and greatly appreciated

 

[Rigboat27]

Also i need to remove the stripped screw however possible but i dont have any special screw removal tools or a drill

 

[Rigboat27]

And a final question:
Suppose the mb failed
How could it randomly and suddenly fail, especially at this particular instance

 

[Rigboat27]

And how is improper heatsink and dust responsible for such a huge problem i.e
Failure to boot

 

[lga1156_ftw]

Dust = more heat , its not sudden failure obviously these things take time but in your case theres so much dust it clogged the fan which causes high temperatures for the cpu and near components since heatsink is not properly moving the heat from the fan. However you have integrated hd graphics and no dedicated / discrete graphics chip which is way more likely to fail cause of this so dont worry that much. This is very common in laptops with amd graphics chips, i literally used to have about 30 of these laptops just taking space in my old appartment lol

 

[Rigboat27]

Also i need to remove the stripped screw however possible but i dont have any special screw removal tools or a drill

This is extremely important
Failure to remove the screw will not allow me to troubleshoot anything and come to any conclusion, let alone fix anything
It will also keep nagging me till i DIE
Hope you understand lol

 

[lga1156_ftw]

There is no "improper heatsink" , there can be poor thermal design which plague these laptops, particularly apple products

 

[Rigboat27]

Ok

Dust = more heat , its not sudden failure obviously these things take time but in your case theres so much dust it clogged the fan which causes high temperatures for the cpu and near components since heatsink is not properly moving the heat from the fan. However you have integrated hd graphics and no dedicated / discrete graphics chip which is way more likely to fail cause of this so dont worry that much. This is very common in laptops with amd graphics chips, i literally used to have about 30 of these laptops just taking space in my old appartment lol

Thanks!

 

[Rigboat27]

There is no "improper heatsink" , there can be poor thermal design which plague these laptops, particularly apple products

K

 

[lga1156_ftw]

Did you already try booting with only 1 ram stick installed? you can try ram stick in slot1 and remove from slot2 (power cable and battery off when you touch these) then try boot, after that put ram2 in slot 1 and test the possibilities of bad ram slot or ram stick.

Thing is what i would do as the first thing if i where you , would be to disassembly the motherboard completely off the case to a desk which has nothing conductive on it like wooden desk, Then i would take power button cable off from the front case and connect it straight to motherboard connector.
add hdmi cable to external monitor ,remove cmos battery and

Put in power cable and boot it, if i see imagine in screen i know its something wrong with lcd or other stuff like speakers, usb board etc. If still no picture i unscrew the heatsink and take cpu off the socket and clean the socket and check if cpu pins are okay, put it back and do quick test without the fan connected, just 10seconds if i see logo then plug off power cable or cpu might die from too much heat without heatsink.

Look for any corrossion or water / liquid damage anywhere on the board.

 

[lga1156_ftw]

After that your left with bios corruption in main bios chip or EC bios chips, maybe even bad connection or chip dying. Components failing on the motherboard, failing intel hd graphics (rare).

Uusally there is a problem (other components failing) which causes bios corruption unless you flashed it before problem occurred. Thats why you can find threads about people flashing bios chip and still continuing to have issues later on.

 

[Rigboat27]

After that your left with bios corruption in main bios chip or EC bios chips, maybe even bad connection or chip dying. Components failing on the motherboard, failing intel hd graphics (rare).

Uusally there is a problem (other components failing) which causes bios corruption unless you flashed it before problem occurred. Thats why you can find threads about people flashing bios chip and still continuing to have issues later on.

Thanks a lot for this
But you do get stripped/extremely tight screws right?
How do you handle them, especially when they are very deep and uncomfortable to handle

 

[lga1156_ftw]

I never had to use drill or anything like that, i had issues like this and started using more thicker screwdriver where you can use more force easier. Like these instead of the thin ones :

https://toolguyd.com/tekton-usa-screwdrivers/

Then just use enough force towards the screw if its very stuck, you cant really use that much force with all screws depending where its located, might break stuff.

 

[lga1156_ftw]

Test the tips in the start before drilling, also in the end of the video hes using aluminum foil thats good too, and glue as a final solution.

View: https://www.youtube.com/watch?v=xaQ9eX-b6GA

 

[Rigboat27]

Will try later and report
Thanks for the tips