data parity error

Anyone have any suggestions on what could cause the following errors, It looks like possible corruption? The box was sat as a hot spare for a couple years (installed in 2019) and then decommissioned and kept on a shelf for a while, now it throws the hv_warnings frequently even after I flashfig the firmware fresh.

tia

RouterBOOT booter 6.49.5

CCR1072-1G-8S+

CPU frequency: 1000 MHz
  Memory size: 16384 MiB
    NAND size: 128 MiB

Press any key within 2 seconds to enter setup..

loading kernel... OK
setting up elf image... OK
jumping to kernel code
(7,0) hv_warning: L1D$ data parity error at PA 0xff75aab8
(7,0) hv_warning: L1D$ data parity error at PA 0xff75ffb8
Starting...
Starting services...
(7,0) hv_warning: L1D$ data parity error at PA 0xfaabfd78
(7,0) hv_warning: L1D$ data parity error at PA 0xff755f38
(7,0) hv_warning: L1D$ data parity error at PA 0xff70e838
(7,0) hv_warning: L1D$ data parity error at PA 0xff755f38
(7,0) hv_warning: L1D$ data parity error at PA 0xff755f38
(7,0) hv_warning: L1D$ data parity error at PA 0xff755f38
(7,0) hv_warning: L1D$ data parity error at PA 0xff755f38
(7,0) hv_warning: L1D$ data parity error at PA 0xff75ffb8
(7,0) hv_warning: L1D$ data parity error at PA 0xff75ffb8
(7,0) hv_warning: L1D$ data parity error at PA 0xff75f578
(7,0) hv_warning: L1D$ data parity error at PA 0xff70e6f8
(7,0) hv_warning: L1D$ data parity error at PA 0xff75f578
(7,0) hv_warning: L1D$ data parity error at PA 0xff75f1b8
(7,0) hv_warning: L1D$ data parity error at PA 0xff75f1b8
(7,0) hv_warning: L1D$ data parity error at PA 0xff75ffb8
MikroTik 6.49.5 (stable)
MikroTik Login: (7,0) hv_warning: L1D$ data parity error at PA 0xff755f38
(7,0) hv_warning: L1D$ data parity error at PA 0xff755f38
(7,0) hv_warning: L1D$ data parity error at PA 0xff755f38

Seems your 1072 has memory problem. Press any key within 2 seconds after power on and look for memory test at menu. Some friends reported some bad board capacitors can act same but before close inspection better to do test first.