benstiller

I would suggest you to go to a support centre and leave it the professionals. If you wish to do it yourself, first download the repair manual relevant for your model and follow the instructions.

Your IE crashes due to the in-compatibility of the hardware & the IE. Where your system does not have sufficient virtual memory to run the IE. Your WiFi problem is because of two reasons one you’re going out of range and other reason is your wireless adapter might be a g/b and your router might a n.