Generally, Meind 300W modified sine wave power inverter should be perfect  for operating a laptop computer.

It would however be a nice idea to double confirm the power required on your Laptop, from the Power adapter and/or on the bottom of your laptop.
It is better to keep at least 10% power buffer, for example, 100W laptop needs 100W + 10% = 110 Watts

The power adapter provided by laptop is capable of handling with a sine wave generated by the modified inverters. However you may find some performance based issues such as slight humming, or the occasional line across your screen.
Then an Meind Pure Sine Wave Inverter is recommended for the best performance.

Mac Books and other Apple electronics will require a pure sine wave power inverter to run successfully.

These appliances tend to be more sensitive with regards to how they utilize their power. In this situation a modified sine wave power inverter may cause your operating system freezing or locking up on a regular basis.