"We hope we can help a good many of you avoid the need to reload."

Unknown problem

The firm said its fix did not work in all cases.

"There can be many causes," said Mr Kennerley.

"But if your black screen woes began in the last two weeks... or after running any security program (including Prevx) to remove malware during this time, then this fix will have a high probability of working."

Mr Kennerly said the firm had identified "at least 10 different scenarios which will trigger the same black screen conditions".

"These appear to have been around for years now," he said.

The firm reports that the problem affects editions of Windows 7, Vista, XP, NT, and Windows 2000.

Microsoft said that people who are affected by the problem should contact its customer service line.

The "black screen of death" moniker（名字，绰号） is a play on the "blue screen of death", which appears when Microsoft operating systems crash（系统崩溃）.

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