You try to log into your computer, but everytime you sign in, your computer screen goes black and it only works when you restore it to a previous date. When you switch on your computer again it has same symptoms. You restore to previous date it fixes your issue but when you shut down your computer and turn it on again it has same problem.
Please boot your computer into Windows safe mode with networking. Try to download and install MalwareBytes. Update malwarebytes and then run a full scan.
Hopefully, your black screen issue will be resolved. If your able to boot into Windows safe mode, you can run a "chkdsk c: /f /r" without quotes in a windows command prompt window. You will be prompted to answer Y for yes so that chkdsk starts a scan at next reboot.
Reboot your computer and chkdsk should start a scan. Also, you can try another malware and spyware program called ComboFix. Disable or close all anti spyware, anti malware antivirus real time protection, which may affect ComboFix.
Download a latest official version of ComboFix and save it to your desktop. Close all programs on your computer. Double click ComboFix.exe on your desktop.
When Combofix is finished, it will create logs for you. Both MalwareBytes and ComboFix are free downloads. Right click on either of two download links for ComboFix and save as to your computer.
MalwareBytes should automatically start downloading from previous link. These tips were written for a computer running Windows XP, but can certainly be used for other Microsoft Windows operating systems, Vista, 7, 8, and 10.