Do you have any data that was on on that E: drive? Are you missing data?
What is happening is that the E: partition is your 4th "drive", but you can't see it or use it in Windows because it is RAW.
If you are sure there is no data on that E: partition (248GB), then you could delete it in Disk Management and the create a new partition and format it NTFS. Then the partition will be usable.
You can not create more than 4 Primary partitions on a MBR drive. If you try you may convert the disk to a Dynamic Disk, which you do not want to do. If you need more than 4 partitions you can create an Extended Partition with Logical Drives.
That HP driver is a problem. You should not have to create a partition to install a driver IMO. I would look into options to install that without the HP Tools partition.