English Community

Lenovo NotebooksLenovo P, Y and Z series Notebooks
All Forum Topics

2 Posts



5 Signins

60 Page Views

  • Posts: 2
  • Registered: ‎08-07-2018
  • Location: BG
  • Views: 60
  • Message 1 of 1

IdeaPad Z710 CPU upgrade problem i5 4210M to i7 4700QM

2019-09-10, 20:52 PM



my laptop was original with CPU  i5 4210M


and I was thinking to upgrade CPU, I saw already here that sume users did upgrade

I saw that possible upgrade is i7 4700MQ, I saw that it is in CPU list of this model

I desided to do it, found CPU in ebay and boght it

I have removed i5 and put i7 4700MQ , 

every thing looks ok, but no, problems start after the change

I saw that battery doesnt charge, and when laptop is with battery  then power consumation is from battery only, even it is pluged in AC adapter. I saw that new CPU is 47W, so may be power adapter is not ok, original adapter is 65W,

when I remove battery, it seems laptop work good, but when I start Aida burning test CPU is on 100% but frequency is under 2.4Ghz which is maximum frequency. It seems power is not enoought.

And other thing is if I put AC adapter 65W and battery then CPU aways is working on 0.79Ghz, when I remove AC adapter and laptop runs on battery then frequency go to 2.4Ghz

I saw that maximum adapter for this model is 135W so I thought that I need this one since i7 4700MQ is most powerful processor

I bought one 135W but I have exactly same problem as 65W


also what is strange I try 90W AC adapter, it is working, on battery it charge it but if I start Aida burning test CPU not work on high frequency level.

135W Charger is 135W, Delta ADL135NDC3A 20V6.75A adapter from year 2014, but 90W is from 2018


It is strange that I can't find simular problem when I google.


Is someone have idea what is happened?








Forum Home

Community Guidelines

Please review our Guidelines before posting.

Learn More

Check out current deals!

Go Shop