Help

Bought a "good as new" very nice looking DM 8000HD with no visible wear. Had not been used for 2+ years!

It had OpenPLi 4 (?) on it and I updated to the current OpenPLi 7.0 Stable.

I have 2 problems with it:

1) Picture freezes randomly during up-time, sometimes 1, sometimes 2, sometimes 3 times a day.

Sometimes (not often) it runs all day without freezing. Audio is OK.

What can this be -  any suggestions to fix it?

2) Every night at approx. 01.00 the box restarts all by itself but freezes at that point.

What can this be - any suggestions to a fix?

Box Brand & Model: Dream Multimedia DM8000 Chipset (Frontprocessor Version): Broadcom 7400 (7) Main Memory: 82632 kB free / 149292 kB total Box Uptime: 10:38 Software System OE: PLi-OE Firmware version: OpenPLi 7.0-release (2019-02-12-release-7.0) Kernel / Drivers: 3.2 / 3.2-20140604a-r7.0.0 Tuners Tuner A BCM4506 (internal) (DVB-S2)
19.2° E / DW (English) Tuner B BCM4506 (internal) (DVB-S2) Tuner C BCM4505 (DVB-S2) Tuner D N/A (empty) Hard disk model: ATA(SAMSUNG HD105SI) Capacity: 876.6 GB free / 931.5 GB ("1 TB") total (/media/hdd) Network Interface: eth0 (Broadcom STB 10/100 EMAC) Link Speed: 100 MBit/s MAC address: 00:09:34:1c:aa:36 IPv6 address(es): none/IPv4-only network (SLAAC) Network Interface: wlan0 (ath5k) Link Speed: unknown MBit/s MAC address: d8:5d:4c:eb:3c:68 IPv6 address(es): none/IPv4-only network (SLAAC)