Few days back I noticed random stuttering and lagging (and random freezes) in games which occured for about 5-10 seconds and then back to normal. I got the bsod with error code : Memory Management TWICE! I ran the chkdsk (saw it on some techsite) after running the command for about 5-10 minutes, pc restarted and since then I haven't been able to see my desktop. It's just stuck on a black screen after the windows loading screen. PLEASE HELP!!