The problem is laptop freezes for short period and then recovers. I had this problem before and was told it was to do with Northbridge and there was a small program that cured it. Unfortunately had to replace hard drive and on reinstalling everything the fault returned. Yes, you have guessed, cant find program.
Laptops have a whole slew of specialized drivers, and I recommend that you only use the OEM OS and drivers that came with your PC or that are available from the OEM website. Any 'clean' install with a non-OEM OS is begging for problems.
If you did use the OEM install and if the Laptop is older then my focus, assuming no H/W problem(s), is to clean ALL of the cooling fins. The problem is taking apart the laptop in order to access those components.