Connection timed out/ system crashing. HELP!

Hello,



My ps3 says that it is connecting to the internet but fails the connection test. my laptop and phone both have internet access but my ps3 says that the connection has timed out. Why? Ive been using the same router the whole time I've had it (since December) and haven't had any problems. HELP! Also my system keeps crashing and I have to hold the button until it beeps twice and go through and reinstall everything. I've had to do that probably 3 times in the past 2 months.