New
#21
Put bios in ahci mode and install from bootable flashdrive.
MBR is fine.... it has a disk signature (sort of bar code to uniquely identify the disk), is sees partitions. And it has bootcode to find the ACTIVE partition..... MBR is fine.
It still can be a rootkit virus in MBR. To clean all from disk
Disk - Clean and Clean All with Diskpart Command
do clean instead of "clean all".
But once again... your harddisk is faulty!! Boot from macrium winpe dvd and make a backup!! Also very very slow?? winpe dvd loads everything from dvd in memory and runs from there. It only accesses the internal harddisk to read files. It doesn'execute anything from internal harddisk. So no virus can be active