Laptop keeps freezing. What can I do?

There can be many different causes, but you could try; freeing up your ram usage, antivirus check (trial downloads), use a ethernet cable, check if your graphics card is updated, use a USB mouse?, or a factory reset (last resort, unless you've backed up your important data), anywho just to let you know that I'm no expert, but I've resolved many problems like yours I just wish you luck ;)

Immediate Actions

Whatever the root cause may be, when you're staring down a paralytic PC, the initial steps to take are the same. First, try to close the offending program. If only one program is having issues, closing it will often temporarily solve the problem. But closing the program may be more difficult than just clicking the X in the corner.

If a program is unresponsive, try closing it through the Task Manager. You probably already know that you can access this tool by pressing Ctrl+Alt+Del, but for a quicker route, you can also use Ctrl+Shift+Esc.

If your laptop won't even let you do that, then it's time for a hard reset. On most laptops, you can do this by pressing and holding the power button for a few seconds longer than usual—just hold the button until the device powers off. If this doesn't work, you may need to do it the hard way—by disconnecting the AC connection and removing the battery.

The next thing to do is check is the temperature of the laptop. While most people don't have a Fluke IR thermometer handy, the touch test is usually sufficient. Feel the laptop chassis, but be careful, because it may be hot to the touch or even hot enough to burn. Hotspots are common around the vents and hinge, and on the underside of the system. Also do a visual inspection of the vents. If there is anything obstructing airflow, the heat buildup may be causing the problem.

http://www.pcmag.com/article2/0,2817,2420581,00.as...

I have cured this problem and been over 85% successful with the exact problems you have described. I have used a high pressure air hose and "very carefully" blown the dust and dirt out the air path from the intake air passages all the way through the CPU air fins that are "very narrow and easily clogged in a laptop", all the way though to the exit port on the side of the laptop. this should be done by someone who has a "experience" with laptop repair. (the bottom of the laptop needs to be removed and often the CPU cooler and Fan needs to be removed to be cleaned properly)

Laptops should always be used on a hard flat surface like a table top or a something similar. Never ever a blanket or a bed top. The cooling air intake slots are all in the bottom on almost all laptops.

Even a laptop used on a table top for many hours every day sometimes requires to be cleaned out in this manner if it is over two or three years old.

I am a Certified Professional Broadcast Engineer, Broadcast Networking Certified

You need a new laptop buddy. That one is fried and there's nothing you can do about it. My dad's friend fixes computers and he told me this.