BSOD 3-4 times a day :-(

Hi There

Please I hope you can help me, I'm no expert with windows so I need your help to find out why my acer laptop is crashing up to 4 times a day showing the blue screen of death. It started after windows 10 anniversary upgrade.

My business is online (web design) and I'm loosing money very time windows crashes :-(

I have no malware or any viruses on my computer, I have windows defender and kaspersky anti virus.
I have also done a memory test and all is well with RAM running like it should.

Please I seriously don't know what else to do I have done so much in loading this and running that and still the problem persist.

Thank you in advance....
Kind Regards
Sue