Windows 7 - Windows Could Not Search for new updates Code 8024800A

Running 64 bit Windows 7 Home Premium and all fine until recent batch of updates when mouse cursor statrted to jump and screen then froze. No luck with restore points so I had to resort to recovery using Acronis 12 full back up that i did at end of January

2013. Acronis recovery successful and computer seemed fine. Updated/patched Norton and ran full scan. Updated and ran Spybot - no problems found. Updated and ran Malwarebytes, again no problems found.Adobe and Java 17 updates advised and I installed these and then thought that I should check for windows updates.Ran windows update several times only to get following with cross in red shield:Windows could not search for new updatesAn error occured while checking for new updates for your computer.Error(s) found:Code 8024800A Windows Update encountered an unknown error.I clicked on get help and ran that fix it file. Seemed to indicate that it had found errors and presumably fixed them - Green tick showed along with fixed and no other issues flagged in log.Tried to run updates again, as instructed, and exactly same message.Windows driving me mad as have spent most of day working to get to this stage!Solution would be greatly appreciated.Many thanks in advance

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