Shadow Copy nightmares with Windows 7 + SSD

My backups act horrible. It will sit for 20 minutes, locking up the machine attempting to do a shadow copy. When I look at the event logs, it is loaded with the error:

Volume Shadow Copy Service error: The I/O writes cannot be flushed during the shadow copy creation period on volume \?\Volume{621eaee6-beb3-11e0-a305-005056c00008}. The volume index in the shadow copy set is 0.

Error details:

• Open[0x00000000, The operation completed successfully.],
• Flush[0x80042313, The shadow copy provider timed out while flushing data to the volume being shadow copied. This is probably due to excessive activity on the volume. Try again later when the volume is not being used so heavily.],
• Release[0x00000000, The operation completed successfully.],
• OnRun[0x00000000, The operation completed successfully.].

Operation: Executing Asynchronous Operation

Context: Current State: DoSnapshotSet

I'm not 100% sure how to interpret this, but some sources online seem to suggest I expand the system partition from 100MB to 300MB. However, I couldn't figure out how to perform that operation. I'm pretty lost!!

I skimmed through this article and noticed that my C: boot drive is not marked as active (although my system reserve partition is). Does that have any bearing on things?

This is all occurring on my 120 GB Intel 510 SSD.

How can I perform a shadow copy/get this darned backup working??

The very first try should be to make sure that Windows is not right and confirm that your SSD is really idle. See the answers to this question for some suggestions (not the answer I posted there :-)

Secondly, try to disable your Anti-Virus and try again. Some AV programs can be so slow scanning files Windows thinks that the disk is too busy (we had one case with a program from a company starting with F-).

Finally, for a Windows XP I used the description to re-register all VSS components (as described here, for example). But I don't know if these components are still working for Windows 7.