How do i delete downloads from tablet

Ram and storage are different. Buy the SD card and transfer your pictures etc to it.

Tablet out of space or not connected to WIFI Trt deleting things you don't need. Also add a SD memory card if you can. Delete unused APPs. Then Power down completely and restart.
Some tablets want to be on WIFI to download APPs

Guess somehow your tablet factory reseted itself. If that's the case, nothing can be restored and all your data was delete

Go to your control panel and look in programs, and look for any programs that you are not used to seeing, because somehow you have a malware virus and it is nasty. You need to delete any programs that you know that you did not download and delete that program. restart your computer after you do this, and then download AVG free antivirus, this is what I have and it works great for these type of issues, best of all its free. You have the option to upgrade if you want, but the free version works just fine. Good Luck !

you dont mention what types of files you downloaded but, I'll try some basics. if your security settings require downloads to be from google play or the samsung app store, you have to reconfigure your settings. Also, the downloads must be android compatible. if they need flash, you will need a browser with flash built in like puffin as flash stand alones are useless. finally, you deleted files to make room? you might need to be certain you didn't delete any essential files or files attached to factory installed programs. without knowing what downloads you are trying or where they were downloaded from. I can offer nothing further. good luck

This is NOT easy to do. http://www.androidcentral.com/android-50-hits-nexus-devices-heres-how-update

Usually the best way is to download a file manager application from your tablet's app store, navigate to the download directory inside that file manager application and use the application's delete command to delete unwanted files.

I assume you are in the downloads app if so just touch and hold for short while it should then select the file and the delete button should (trash can) appear at the top of the screen.

Install a file browser (I use ES File Explorer) and then just open the Download folder. Long press a file to select it, then press Delete button which appears bottom of screen