Windows 10: I accidentally messed up my volumes and my OS wont even boot anymore

Windows can’t find my boot OS anymore because I messed around with the Diskpart tool and unassigned my partition/volumes. I can’t even install a fresh copy of windows using the bootable ISO USB as it gives me an error. Can you please help:

:)

 

MBR of RAID volume overwritten, OS fails to boot. Help.

I've screwed up, big time.

My machine has a RAID 0 of two 500GB drives. The resulting volume stores my Windows XP installation. Its contents are vital. I installed an additional 80GB IDE HDD to install Kubuntu. During Kubuntu's setup, those 500GB drives were displayed as is, and not as the resulting volume. I was able to make sure the right drive (hdc, that 80 GB HDD) was partitioned and formatted, but the grand screwup came where in the "finalise" step, you have to specify where the boot-loader has to be installed. This option was hidden in a seperate dialog that comes up on clicking an "advanced" button somewhere. Well...the installer wrote the boot loader to (hda), the first member of the RAID 0 volume, when the installer doesn't recognise the volume itself and only its member disks.

Windows doesn't boot, neither does Kubuntu (shows Grub error 15). I need a way to recover data from the volume. I'm hoping the volume's contents are intact, though its MBR is gone. How do I boot Windows?

I can't use a WinXP boot floppy made from another system, since the boot floppy won't recognise a RAID volume. Should I boot the machine with the Windows XP install CD + AHCI driver floppy and install the OS without formatting the volume, so at least I could safely move my files to another drive even if the resulting OS is unstable? Ideas please.

 

PC wont boot up (No POST, No Video)

I recently installed a new Asus M5A99X Evo r2.0. The motherboard green LED lights up and the case and cpu fans spin. But there is no video when its hooked up to my monitor.

Steps that i have tried:
http://www.tomshardware.com/forum/261145-31-perform-steps-posting-post-boot-video-problems

Made sure all connections are properly connected.

Flashing the CMOS

Tested the PSU

Followed all steps in the user manual

If there are any links that you guys can point me to or suggestions that could help it would be highly appreciated. Thank you

 

How to fix error unmountable boot volume

Hi James,

It is possible that you received the error UNMOUNTABLE_BOOT_VOLUME due to a damaged file system which failed to mount. This error also means that sub-system on machine failed to mount the boot volume. To efficiently assist you, we'd like
to gather more information:

• Have you made any recent changes prior to this issue?
• What is the exact error message you received?
• What troubleshooting steps have you done so far?

Meanwhile, we suggest that you you follow the steps shared by Michelle Her and
Billion Debbarma on this threads below to troubleshoot your concern:

• Windows 10 Unmountable Boot Volume Error Message And Automatic Repair
• Unmountable_boot_volume -Windows 10
  

Keep us posted if you need additional help.