My 1TB HDD is not visible in windows, This was a WD My Book 1TB hard disk. It was suddenly went undetectable so i removed HDD from the case and tried to connect it to my desktop as an internal drive to try accessing data. but from my bad luck it is showing as 931.50GB unallocated space in disk management and the drive is not showing in my computer also. When I run Analyze in Testdisk it tis not showing the unallocated disk space. It's a single partition.

TestDisk 7.2-WIP, Data Recovery Utility, February 2023
Christophe GRENIER <grenier@cgsecurity.org>
https://www.cgsecurity.org
OS: Windows 8 (9200)
Compiler: GCC 11.2, Cygwin32 3001.4
ext2fs lib: 1.45.3, ntfs lib: 10:0:0, reiserfs lib: none, ewf lib: 20140608, curses lib: ncurses 6.1
disk_get_size_win32 IOCTL_DISK_GET_LENGTH_INFO(\\.\PhysicalDrive0)=1000204886016
disk_get_size_win32 IOCTL_DISK_GET_LENGTH_INFO(\\.\PhysicalDrive1)=250059350016
disk_get_size_win32 IOCTL_DISK_GET_LENGTH_INFO(\\.\C:)=243951206400
Hard disk list
Disk \\.\PhysicalDrive0 - 1000 GB / 931 GiB - CHS 121601 255 63, sector size=512 - WDC WD10EADS-114BB1, S/N:WD-WCAV5L469512, FW:80.00A80
Disk \\.\PhysicalDrive1 - 250 GB / 232 GiB - CHS 30401 255 63, sector size=512 - KINGSTON SA2000M8250G, S/N:0026_B768_3E05_25C5., FW:S5Z42105
Partition table type (auto): EFI GPT
Disk \\.\PhysicalDrive0 - 1000 GB / 931 GiB - WDC WD10EADS-114BB1
Partition table type: EFI GPT
Analyse Disk \\.\PhysicalDrive0 - 1000 GB / 931 GiB - CHS 121601 255 63
hdr_size=92
hdr_lba_self=1
hdr_lba_alt=1953525167 (expected 1953525167)
hdr_lba_start=34
hdr_lba_end=1953525134
hdr_lba_table=2
hdr_entries=128
hdr_entsz=128
check_part_gpt failed for partition
1 P MS Reserved 34 32767 32734 [Microsoft reserved partition]
Current partition structure:
No FAT, NTFS, ext2, JFS, Reiser, cramfs or XFS marker
1 P MS Reserved 34 32767 32734 [Microsoft reserved partition]
1 P MS Reserved 34 32767 32734 [Microsoft reserved partition]
I don't know what problem with my harddisk.

Is it still possible to recover my harddisk data?
Any advise is welcome.
Thank you for reading my problem.