I recently purchased a new Sony Vaio E series Laptop model number VPCEG3WFX for my girlfriend. The laptop was preinstalled with Win 7 home and constantly stuttered, lagged and was nonresponsive for short periods of time, we are talking 7-10 seconds and then back to normal for 30 or seconds and then back to lagging. I figured this was just bloatware causing the issue so I removed it, but there was no change. I went ahead and freshly installed windows 8 on the laptop (which I received from my CIO at work) and still the problem exists.
If I go to resource monitor and view disc activity the computer will spike to 100% highest active time every 15-20 seconds and that is with me doing absolutely nothing but leaving it sit on the table. I have determined that when I top out at 100% is when I start getting lag and unresponsiveness.
Let me know if there is anything you guys want to see and I will get it to you ASAP, I have posted some screen shots of the resource monitor as well.