Laptop not booting anymore

I ran CCleaner on my laptop and ever since then, it's stopped booting. When I start the computer, it takes me to Startup Repair, which is unable to fix the problem for me. The make is Acer 5820T. The OS is Windows 7. I can't see my BSOD, even when I press F8 and then choose the "disable system restart" option (as advised in this thread http://ift.tt/Z3g9c5). It just takes me straight to another Startup Repair. I've been using Windows Security Essentials. When I tried using System Restore, it just says that no restore points have been created on the computer's system drive. I used sfc \scannow too, and I've attached a picture of what came up then. At the end of my tether here, and I'd appreciate from the bottom of my heart a solution that doesn't involve a wipe. Help please!