Macbook's ground to a halt
A few days ago my Macbook started to move very slowly- out of no where. I have a 2012-mid Macbook Pro running OS X El Capitan 10.11.6 with over 200GB free storage space and the memory was upgraded a few years ago to 16GB RAM.
It takes about 10mins to boot up, then every action or click causes a colour spinning wheel. I can't do a Time Machine back up to wipe everything because it takes ages to copy files and then it crashes after a while. I have been trying to download Catalina as an software upgrade is due but again during download it gets stuck.
Any tips or help would be much appreciated.
MacBook Pro 13", OS X 10.11