When it rains, it pours, and it is currently pouring on Windows 7. After the massive WannaCry ransomware attack hit a large number of Windows 7 computers last week, another bug is slowing down and crashing Windows 7 and 8 machines.

According to Ars Technica, the new bug infiltrates computers through rogue websites that attempt to load an image file by the name of "$MFT" into the directory path. "$MFT" is the name of metadata files handled by Windows' NTFS filesystem. Unfortunately, Windows 7 and 8 PCs can't handle the directory name properly and they either slow down in performance or outright crash. There are even reports of some users experiencing a blue screen of death.

The Verge reports it tested the bug on a Windows 7 PC. Loading the filename "c:\$MFT/123," the Windows 7 computer slowed down to a point where it had to be rebooted.

This new bug is similar to a bug that affected Windows 95 and Windows 98 computers in which certain filenames would crash the operating system.

The good news is that the bug isn't affecting Windows 10. Microsoft has been alerted of the new bug, but as of today, there is no word of an update coming to patch things up.