Good. Let's continue 
Download 
tdl_fix.sh and save it to the xPUD flash drive.
Boot into xPUD then click the 
File tab.
Navigate to and select the mnt>sdb1 folder - you should see the tdl_fix.sh file.
Click 
Tool>Open Terminal on the menu bar.
Type 
bash tdl_fix.sh then press Enter.
Read the warning then type 
y and press Enter to continue.
Type 
sda then press Enter when prompted.
You will be shown a list of partitions to choose marking active.
Type 
3 then press Enter.
If you are presented with a warning about no bootloader files, type 
n then press Enter to choose another. If this happens, type 
2 to select partition 2 then press Enter.
When you recieve no warning about bootloader files but are presented with another view of the partition structure and asked if it looks correct, type 
y then press Enter.
The script will complete and prompt you to reboot the computer. Close the Terminal window and restart back into Windows.
Post the contents of the 
tdl_fix.txt file that was created on your flash drive and let me know how the computer is behaving.
Note - in the event there is a problem booting the computer normally after running the script, run the tdl_fix.sh script again using the following command.
bash tdl_fix.sh -restore
Make sure to leave a space to either side of tdl_fix.sh in the command.
This will prompt you to use the file tdl_mbr_sda.bin on drive sda.
Ok the procedure then restart when complete.
This is a backup of the original mbr and will restore it to it's current state.