The CAB-xxxx files that you see in the C:\Windows\Temp\
folder are some temporary files created by different Windows Operations, like installing Updates. You can safely delete these files off from that folder. Alternatively, you can also run Disc Cleanup to delete the temporary files from your computer.
I would suggest you to try the Methods mentioned below and check if it helps:
Delete files using Disk Cleanup
Please scan your computer from Microsoft Safety Scanner
, which would help us to get rid of viruses, spyware, and other malicious software.
The Microsoft Safety Scanner is a free downloadable security tool that provides on-demand scanning and helps remove viruses, spyware, and other malicious software. It works with your existing antivirus software.
The Microsoft Safety Scanner expires 10 days after being downloaded. To rerun a scan with the latest anti-malware definitions, download and run the Microsoft Safety Scanner again.
Any data files that are infected may only be cleaned by deleting the file entirely, which means there is a potential for data loss.