Question Laptop freeze when it hits 65C after cleaning it

[Alquist]

It hasn't been cleaned in over 10 years so I decided to disassemble and clean it. And now when it hits 65C it freeze with visual artifact and sound loop. One thing I noticed is the fan doesn't speed up when needed so it might be the problem but I have no idea what I can do now.

 

[COLGeek]

What is the make/model of this laptop?

By "clean", did you just remove the buildup of dust or did you change thermal compound/pads during the process?

 

[Alquist]

What is the make/model of this laptop?

By "clean", did you just remove the buildup of dust or did you change thermal compound/pads during the process?

HP 550, I Replaced the thermal paste and cleaned the dust off

 

[COLGeek]

Your heatsink may not be fully tightened. Also, the fan itself may no longer be working optimally. I would also double check all connections to ensure proper attachment.

I would think the service manual would help identify the parts needed to replace the fan.

http://h10032.www1.hp.com/ctg/Manual/c01627018.pdf

 

[Alquist]

Your heatsink may not be fully tightened. Also, the fan itself may no longer be working optimally. I would also double check all connections to ensure proper attachment.

I would think the service manual would help identify the parts needed to replace the fan.

http://h10032.www1.hp.com/ctg/Manual/c01627018.pdf

I thought the same and checked the connections twice and thightened the heatsink but it wasn't the problem. I will have a look at the manual, thank you.

 

[COLGeek]

Given the age of the system, you could also be suffering a component breakdown on the motherboard itself that is contributing to the problem. 65C is not that hot (relatively) for laptops, especially when under load.