#1 Acer Aspire 8730G, MB: Wistron 08223-2, Restarts with RAM in both slots
von matic • 29 Januar 2026, 23:35
Brand: Acer
Model: Aspire 8730G
Motherboard: Wistron Big Bear 2, 08223-2, 48.4AV01.021
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Hello!
About two years ago I was working on this "old guy" with a problem it randomly shut down while in use. It was a standard issue - bad "NEC/TOKIN" capacitor under the CPU (on another side of the board). I replaced this capacitor with a six pieces of 220µF/6.3V tantalum capacitors.
Now this laptop has returned with a similar, but different problem - it shuts down and restarts automatically while in use. It turns out this only happens when RAM memories are inserted into both slots. In the case that only one RAM is inserted into either of the two slots, the laptop works flawlessly.
The issue only occurs when the laptop is booted into OS. If I leave the laptop turned on the BIOS screen the issue does not occur.
I did the following:
- Freshly installed OS on another disk with only one of the two RAMs inserted, otherwise the laptop shut down and restart during installation.
- Both RAM memories were replaced with known good ones.
- Original CPU Intel Pentium T4200 (SLGJN) were replaced with Core 2 Duo P8400 (SLB3R).
- Checked all six replacement tantalum capacitors at the place of "NEC/TOKIN".
None of the above measures changed anything.
I'm out of ideas, please help.
Model: Aspire 8730G
Motherboard: Wistron Big Bear 2, 08223-2, 48.4AV01.021
***************************************************************
Hello!
About two years ago I was working on this "old guy" with a problem it randomly shut down while in use. It was a standard issue - bad "NEC/TOKIN" capacitor under the CPU (on another side of the board). I replaced this capacitor with a six pieces of 220µF/6.3V tantalum capacitors.
Now this laptop has returned with a similar, but different problem - it shuts down and restarts automatically while in use. It turns out this only happens when RAM memories are inserted into both slots. In the case that only one RAM is inserted into either of the two slots, the laptop works flawlessly.
The issue only occurs when the laptop is booted into OS. If I leave the laptop turned on the BIOS screen the issue does not occur.
I did the following:
- Freshly installed OS on another disk with only one of the two RAMs inserted, otherwise the laptop shut down and restart during installation.
- Both RAM memories were replaced with known good ones.
- Original CPU Intel Pentium T4200 (SLGJN) were replaced with Core 2 Duo P8400 (SLB3R).
- Checked all six replacement tantalum capacitors at the place of "NEC/TOKIN".
None of the above measures changed anything.
I'm out of ideas, please help.
