RJ12, Greg has fixed/repaired hundreds of MBR and is very good at this.
I definitely agree that it is very likely that the Grub is still on your system, this needs to be thoroughly checked and dealt with now.
This could be the reason for the recent shutdown.
You have to fully clean, wipe, the HDD to get rid of the Grub. Formatting will not remove it. Installing win7 over it will not remove it.
Win7 will use any boot files it finds when installing.
I've posted this to you before but here it is again.
After you have copied out or made back-ups of the data you need to save to external media, use Step One of this tutorial at the link below to do a wipe (secure erase) to the entire Hard Disk Drive / Solid State Drive.
Either way, running the "clean all" then creating and formatting the partition(s) using diskpart will get you the best possible space to do a clean install of Windows 7 to; you can always extend the Windows partition to include the remaining unallocated space on the HDD / SSD or create additional Primary partitions or an Extended partition after the installation completes if you choose.
- Then if you do not want to create the new Windows 7 "System Reserved" partition use the outline in Step Two #2 to create, format and mark Active a single 100GB partition to do the installation to.
- If you do want to create the "System Reserved" partition use the outline in Step Two #3 to create, format and mark Active the System Reserved partition and then create and format the 100GB partition to do the installation to.
SSD / HDD : Optimize for Windows Reinstallation
DISKPART : At PC Startup
Do a Clean Install with a Upgrade Windows 7 Version
Another way is to buy a separate hard drive for data storage.
I like doing it this way as my Data is completely removed
from my system files. I also use an external drive for system image b/ups.
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