Dear fellow crunchers,

One of my computers last night unexpectedly returned an invalid result (meaning double-checker and triple-checker matched while I'm not).
Few prior and further tasks have been validated successfully.
I know this computer previously had a few bad results but the reasons for those have been identified and cleared (naturally, by removing the dust).

The problematic work unit is https://www.primegrid.com/workunit.php?wuid=643799923

Neither blue-screen nor windows updates-caused restart were the case, so I'm wondering what's this time.

While guessings about possible reasons are welcome, I'd like to have the additional verification.
Is it possible to name the number that was tested in that work unit? If so, is it possible to send that number to a fourth computer (preferably, to one of my other two)? I can run a manual LLR on that number and provide the residue to remove any uncertainty about my initial result.

Thank you.
Kind regards, Andrei.

Here's my opinion: If it's just happening once out of 800+ workunits, I would not worry too much about it. If it continues to happen, start looking at the most likely causes (too much heat, overclocking, power, etc).