My laptop is extremely slow after start up?

[TREV]

When I start my computer it takes ages to load anything and I'm fed up of it! When I open Chrome it takes a good couple of minutes to load. It's the same with every other application I wish to load straight after start up. It's as if it needs to warm up for a bit, because after about half an hour it runs absolutely fine!

I do have quite a lot of processes I've noticed, it's telling me 90 at the moment. Is that too much? Also another thing that confuses me is that it says I have 90 processes but it only lists about 40... why doesn't it list all of them?? Most of the processes that uses the highest amount of memory, I looked up, and are important.

My Toshiba Satellite P850-12Z is about 1 and a half years old. I do have quite a few games on it but I always have and it used to work fine on start up.

Can anyone that knows this sort of stuff well help me out? Not great with computer terminology, so if you could speak concisely - as if I'm an idiot - that would be much appreciated,

Cheers.