It has an AMD Radeon R7 M260 which is a low performance GPU. There is no information online, but I would say no you cannot upgrade because it is soldered into the motherboard.
Only specific gaming laptop model that generally costs at least $1,400 will give you the ability to upgrade the CPU. Upgradeable GPUs use the MXM format which is basically like a mini graphic card that fits into a MXM slot. This adds costs to the laptop and generally only high end mobile GPUs would be used for the MXM format because of the additional cost involved.
If you want better game performance, then unfortunately that means you need to purchase a new laptop. The following link gives an idea of the performance of the R7 M260 and several other dedicated...