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Laptop completely freezes, no error message, no BSoD
I have a laptop that worked fine for years, then it started freezing randomly. The computer completely locks up. The screen freezes, the mouse doesn't move, and the keyboard does nothing. No BSoD, no error message. I am forced to reboot using the power button.
The time it takes from booting to freeze is quite random, sometimes after a minute, sometimes after over an hour. The laptop is an Acer Aspire 5551G.
Important clues:
- Full-screen operations are much more likely to cause a freeze (Youtube, Media Player Classic, Games etc.)
- Removing the battery substantially increases the time it takes before it freezes (from 1-10 minutes to 10-90 minutes)
- It will eventually freeze even if the computer is completely idle
- No changes in hardware or software was done before the first freeze (to my knowledge)
- The event log does not have any records indicating an error or failure.
Things I have tried:
- Formatting HDD and reinstalling Windows
- Updating all possible drives
- Trying older drives for the GPU
- Running virus programs (malwarebytes and ad-aware)
- Running memtest86 (no errors)
- Running furmark (over an hour windowed, one minute full-screen)
Additional information:
- There is virtually no dust in the computer
- HWMonitor and furmark shows normal temperatures, idle and load