Why can't my Arnold renderer of MAYA20 17 work?

Memory can't be read or written. In short, there are two possibilities: 1 Hardware problem. Unplug the memory stick, carefully wipe the golden finger with an eraser, then wipe it with glasses cloth or napkin, and then try to plug it in. If not, you can try another memory stick. 2. Software problems. This situation is very complicated. Generally, the system you installed has this defect and it can't be repaired. It may also be caused by software conflicts, mostly anti-virus software. It is difficult to find out which two softwares conflict or which software memory resides. It is also possible that there is a virus in your computer, and the virus has destroyed your system. The simplest solution is to restore the system or reinstall the system. Other methods can't completely solve the problem. Even if it can be solved temporarily, there seems to be no problem on the surface, but there will soon be many inexplicable problems, such as sudden shutdown, jumping out of some strange windows, many programs can't run, blue screen of death and so on. Therefore, changing the system disk and reinstalling the system is the solution to the problem completely.