I own a 4GB Thinkpad SL510 laptop, running Windows 7 Pro 64-Bit w SP1 installed.
Lately, I have noticed that my System Restore points disappear. When I open SR and look for restore points, none are there.
To test this, I create one and it creates successfully. I go back and check after a while....and it's GONE.
There is no apparent pattern of WHEN they disappear. Sometimes they go after a re-boot, sometimes they stay around for a day or so, then disappear. Sometimes they go away while the computer is still on.
I would guess that this started about 1 week ago...at least that's when I first noticed it.
There is a common error in the event log which I attached here. This seems to coincide with the time I no longer have restore points.The shadow copies of volume C: were aborted because of an IO failure on volume C:.
I increased the amount of space for system restore to 40GB (which should be more than enough...this is 20% of my C Drive. I used to have this at 10% with no problems in the past.
I've scanned for viruses and nothing comes up.
I also ran CHKDSK C: /f /r and I found 4kb with bad sectors but no other areas.
Finally, I ran a diagnostic on my hard drive and all tests passed.
I'm pulling my hair out....any ideas to help would be greatly appreciated.