HP Heat issue and Can I swap Processor from one Mobo to another

[Bill MacIntyre]

My Lenovo Z710 laptop died so I reverted back to my HP DV7 3080CA but that one has been having thermal issues. That's why I bought the Lenovo.
It seems to work OK but after several minutes it gets so slow its almost un-useable- even after a fresh install of Windows 10. The processor gets real hot but it slows down even when it doesn't seem very hot.
So I am wondering 2 things...
1. Does it sound like the processor is at fault
2. Would the processor in my Z710 fit and work in H.P. DV7?

Lenovo Ideapad Z710: Intel Core i7 4700MQ
H.P. Pavillion DV7 3080CA: Intel Core i7 720QM / 1.6 GHz

Separate thread on my Lenovo issue:
http://www.tomshardware.com/answers/id-3035245/identify-mobo-fuses.html

 

[USAFRet]

"2. Would the processor in my Z710 fit and work in H.P. DV7?"

No. Different sockets

i7-720QM PGA988
i7 4700MQ FCPGA946

 

[Bill MacIntyre]

Drat!

Any comment as to the possibility of finding another CPU not having same thermal issue

 

[USAFRet]

Drat!

Any comment as to the possibility of finding another CPU not having same thermal issue

I'd think it was the cooling situation, rather than the specific CPU.
Maybe take it apart and redo the thermal paste on the CPU.

 

[Bill MacIntyre]

I already tried that a few times but just remembered something...
Since the main problem seems to be related to video slowing it down, I think the first time I replaced the compound, the GPU had some Teflon or something between the chip and heatsink. I think I may have removed tha because it was torn\\
Maybe theres a gap now and not getting good contact
I will try running something between to see if theres a gap
Also I have some small heat sinks from Raspberry pi that I may be able to stick on as a shim

 

[Bill MacIntyre]

Eureka
It seems to be working ok now
I placed 2 copper shims (from raspberry Pi heatsinks) on top of the 2 smaller chips- GPU and something else between chips and the heat sink assembly.
Ran it for a few hours last night and only seemed to slow down once when I was copying a big folder and trying to process an Outlook PST file with a free PST reader.
The sound got raspy for a bit, other than that seems to run good.
Moral of the story- anyone having CPU/GPU thermal issues, make sure there's good contact between the chips and the heat sinks.

I assume that if there is intermittent solder connections on the chips, that having the extra thick shim would help to give increased pressure pushing the chip against the board and possibly reduce issues.