Ever since I upgraded my computer, I have had issues with it freezing. Sometimes it will freeze, as I said, but mostly if I turn the monitor off and go to turn it back on a few hours later, it doesn't come out of sleep mode. Each time it freezes and/or gets stuck in sleep mode, the red light that signifies if the harddrive is reading/writing turns off. I think it is an issue with RAM, seeing as how one of the RAM cards went bad a couple of months ago and prevented my PC from working until I removed it. This issue is happening more and more this week for some odd reason, and I fear that if it is the RAM card, it will give out soon. It is also very annoying because my PC takes anywhere form 10-20 minutes to fully boot because of my harddrive. I cannot find anything online, so I came here for help.