My laptop keeps beeping and th screen is black

sounds like memory problem. Try reseating the memory, take them out and put them back in. They also can be defective

Dell Inspiron 3520 RAM Replacement

black screen and beep problem

i am already check and done all kind of solution like ram change , ram jack change, hard disk change cell change, all open the laptop and remove the fan on the processor and clean the processor chip and give the head 4 minutes and use thermal grease and re installed all equipment and check the laptop again on the laptop but problem the same .... this is not solution . you most give the laptop to repairing the repair guy........

All computers have what are called beep codes, I hear one beep and know I'm good to go.

I can give you a link for your beep codes http://www.dell.com/support/article/us/e...

You need to count them, there is a delay between each error beep so you know the count.

Normally you will hear the beeps just once (they don't repeat) - Go figure the link claims Dell just continues beeping on..., so start it up and count em. Continued beeping could just as easily be a high CPU alarm but it sounds like you have that covered.

It might be that the RAM is not inserted correctly or there is no RAM.

To check the RAM, 1, get a flathead screwdriver and pry on the four dead spots on the top of the keyboard, Then once that’s done and the keyboard is out of the top casing, insert 4GB of RAM from a two 2GB sticks or one 4GB stick of DDR3 1333MHZ SODIMM RAM. You can also insert 8GB of RAM from a(n) 8GB stick or two 4GB sticks of DDR3 1333MHZ SODIMM RAM. If it has one or two sticks of RAM, make sure that the sticks are inserted correctly and are seated correctly.