Sony Vaio Applications Constantly Crashing/sound Lags?

A few days ago my computer started acting a bit wonky, certain applications running slowly and eventually crashing. I assumed this was caused by some sort of Trojan or other virus and I scanned my computer with Malwarebytes Anti-Malware and MSE. Nothing came up for MBAM but there were three issues with MSE, two I then rooting in some java app. I thought this was the issue but it continued. The computer starts up fine and I haven't had BSOD so far, but not application, even explorer browsers, freeze up within 30 seconds of use. The issue with the sound lagging was just at first noticed with a few games I played. The announced messages would stutter for a minute even though it was a 3 second phrase.I'm posting this from my phone because I'm running a chkdsk scan on my computer again, but nothing showed up the first time.