Hello, I'm not very knowledgeable about computers, so bear with me. I'm having the following problems and I suspect that they are connected because they all began occurring within the last two days. 1) When starting my pc, it will occasionally act like it is powering on (fans will start, light with come on), but will quickly turn off. It will repeat this process until I turn off the power supply, when I try to turn it on again it starts properly. This has happened twice out of ~10 times I've turned on my computer in the last two days. 2) Windows is crashing/freezing periodically (three times in the last two days). 3) When I tried to boot my computer up Windows couldn't start, and advised me to do some sort of reset. I powered the computer off and tried again and it worked. My computer has also slowed down a lot over the past 2 months, but I'm not sure if this is connected. Thanks so much for any help you can give me!