repeatitive BSOD without reason 0x0000007A (0x0000000000000020, 0xFFFF

Hello Sterkmann, I'll see if I can help you solve your issues.

Your STOP 0x7A are pointing towards your hard drive.

Code:

KERNEL_DATA_INPAGE_ERROR (7a)
The requested page of kernel data could not be read in.  Typically caused by
a bad block in the paging file or disk controller error. Also see
KERNEL_STACK_INPAGE_ERROR.
If the error status is 0xC000000E, 0xC000009C, 0xC000009D or 0xC0000185,
it means the disk subsystem has experienced a failure.
If the error status is 0xC000009A, then it means the request failed because
a filesystem failed to make forward progress.
Arguments:
Arg1: 0000000000000020, lock type that was held (value 1,2,3, or PTE address)
Arg2: ffffffffc000009d, error status (normally i/o status code)
Arg3: fffffa80056894e8, current process (virtual address for lock type 3, or PTE)
Arg4: 0000000000000000, virtual address that could not be in-paged (or PTE contents if arg1 is a PTE address)

Debugging Details:
------------------


ERROR_CODE: (NTSTATUS) 0xc000009d - STATUS_DEVICE_NOT_CONNECTED

DISK_HARDWARE_ERROR: There was error with disk hardware

Code:

ERROR_CODE: (NTSTATUS) 0xc000000e - A device which does not exist was specified.

DISK_HARDWARE_ERROR: There was error with disk hardware

BUGCHECK_STR:  0x7a_c000000e

CUSTOMER_CRASH_COUNT:  1

DEFAULT_BUCKET_ID:  CODE_CORRUPTION

Run SeaTools to check the integrity of your HDD. SeaTools for DOS and Windows - How to Use

Run chkdsk. Disk Check

Post back with the results.

OK, have you run SeaTools yet? It certainly sounds like the HDD is dying.