:( Cant restart DaVinci_Resolve_14.3 after reinstalling

Hello,
I am a long time user or DaVinci, and i had no problems for a long time.
Recently I have encountered a serious problem that sometimes occurs when Resolve crashes during rendering or exporting.
Until now I was always able to resolve the problem after a while.
But after I tried to export a bunch of files and resolve crashed again, I tried to export the same file again and resolve crashed again. Since then I cannot get it to start. Not even a full reinstall was able to amend the problem.
When I try to open the project server I get an error message telling me that resolve does not work.
Which means I cannot even reach my projects. As reinstalling Resolve does not solve anything (no pun intended) I am at a complete loss here. And the project I am currently working on is on a tight deadline
What can I do to amend this problem?
I am currently running DaVinci_Resolve_14.3 on Windows 10, on an i7-4790 CPU 3.60 GHz - ACPI x64 with an Nvidia Geforce GTX 770
I am a long time user or DaVinci, and i had no problems for a long time.
Recently I have encountered a serious problem that sometimes occurs when Resolve crashes during rendering or exporting.
Until now I was always able to resolve the problem after a while.
But after I tried to export a bunch of files and resolve crashed again, I tried to export the same file again and resolve crashed again. Since then I cannot get it to start. Not even a full reinstall was able to amend the problem.
When I try to open the project server I get an error message telling me that resolve does not work.
Which means I cannot even reach my projects. As reinstalling Resolve does not solve anything (no pun intended) I am at a complete loss here. And the project I am currently working on is on a tight deadline
What can I do to amend this problem?
I am currently running DaVinci_Resolve_14.3 on Windows 10, on an i7-4790 CPU 3.60 GHz - ACPI x64 with an Nvidia Geforce GTX 770