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Windows 7: Laptop starts up to black screen, won't boot until hours of charging

13 Jul 2013   #11

Desk1 7 Home Prem / Desk2 10 Pro / Main lap Asus ROG 10 Pro 2 laptop Toshiba 7 Pro Asus P2520 7 & 10

Yes well NCM the temp on the CPU is within limits it tops out at 95C - that is before it would auto shut down and the MOBO is about right so it isn't a temp thing as the others have suggested the adaptor could be your problem.

Have you got a meter to check it with? - however correct volts does not mean correct current. Think of a car battery that is reasonably flat now the volts might come up to 13.8v but when attempting to crank the engine for example the volts are ok but the current isn't there - it would explain why the battery is sucking all of the available current and not leaving enough for the machine proper to fire up.

If you had an ammeter you would see what I mean it would check the current draw with and without the battery. Having said that though you say removing the battery makes no difference

So do as Greg says after checking the volts if you can - if they are down then yes it is bung and just replace it if that does not work then mate it might be time for a renewal

My System SpecsSystem Spec
15 Jul 2013   #12

Windows 7 64

"I suggested earlier she* take the laptop to a shop"-gregrocker

Thank you all so much for the help. If I don't get back to you in the next couple of days it's because I'm applying all of the advice and suggestions. Hopefully this issue will be solved soon.
My System SpecsSystem Spec
15 Jul 2013   #13

Desk1 7 Home Prem / Desk2 10 Pro / Main lap Asus ROG 10 Pro 2 laptop Toshiba 7 Pro Asus P2520 7 & 10

Oh well enough from me go with what Greg has said mate.
My System SpecsSystem Spec

15 Jul 2013   #14
Microsoft MVP

Windows 7 Ultimate 32bit SP1

Quote   Quote: Originally Posted by Ztruker View Post
Maybe the problem is with the power adapter?
And that would be my guess!
My System SpecsSystem Spec
08 Oct 2015   #15

Windows 10 Professional 64bits
LENOVO Booting problem

Hi everyone,

First of all....Sorry for my English ;-)
I found this old post and would like to know if anyone succeed to help ncm888 or if he found a solution by himself.
Here is my problem :
My LENOVO Ideacentre a720 ( all in one ) refuse to start before an hour...I tried everything...
After it starts, the "Lenovo solution center" cannot detect any problem ( soft or hardware ) ...And the computer perfectly works...
Of course, I checked the system....Reinstalled a new one ( Factory restauration with windows 8 ) ....Installed a new Windows 10...Replaced the memory...Changed the power supply ( there's no battery, just a power supply )...Removed for a few minutes the battery on motherboard...Checked the HDD ( no errors ) and disconnected it before booting ( just to check if the system is able to tell me "NO HDD" ) ....No success...
I saw you were speaking about a "required" temperature before booting but it seems here's not the problem for me, cause when it starts ( so, it's "hot" enough ;-) and I try to reboot it....The problem remains...
Any idea ? CPU prob ? integrated GPU prob ? The problem comes from Harware ( cause it appears without HDD ) but from where ????
Thx a lot for your help
My System SpecsSystem Spec

 Laptop starts up to black screen, won't boot until hours of charging

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